A look at James Holmes' Colorado theater shooting trial, by the numbers

FILE - In this July 20, 2012, file photo, Tom Sullivan, center, embraces family members outside Gateway High School where he had been searching for his son Alex Sullivan who was killed while attending "The Dark Knight Rises," movie where gunman James Holmes opened fire, in Aurora, Colo. Twelve people were killed and 70 others injured in the deadly shooting. (AP Photo/Barry Gutierrez, File) (The Associated Press)

FILE - In this July 26, 2012, file photo, an AR-15 style rifle is displayed at the Firing-Line indoor range and gun shop in Aurora, Colo. Police say James Holmes donned body armor and was armed with an AR-15 rifle, a shotgun and two handguns during his attack on an Aurora movie theater. Holmes purchased 6,295 rounds of ammunition before the attack and had set up 30 homemade explosives set up in his apartment to go off at the time of the theater attack. They did not go off. (AP Photo/Alex Brandon, File) (The Associated Press)

FILE - In this July 21, 2012, file photo, Shelly Fradkin, the mother of a friend of theater shooting victim Alex Sullivan, looks at a birthday card for Sullivan placed at a makeshift memorial across from the Century 16 theater, east of the Aurora Mall in Aurora, Colo. At least 10 lawsuits have been filed against the theater following the deadly shooting committed by James Holmes. (AP Photo/David Zalubowski, File) (The Associated Press)

A by-the-numbers look at the trial of Colorado theater shooter James Holmes:

421: Number of people inside the movie theater at the time of the shooting

12: People were killed

70: People were injured

4: Weapons Holmes had on him, including a rifle, a shotgun and two handguns

6,295: Rounds of ammunition Holmes purchased before the attack

30: Homemade explosives set up in Holmes' apartment to go off at the time of the theater attack (they didn't)

85,000: Estimated pages of evidence in the trial

$2.2 million: Taxpayer dollars have been spent so far investigating and prosecuting Holmes

22: Hours it took for a second sanity evaluation of Holmes

1,012: Days have passed between the shooting and Monday's opening statements

84: Days needed to select a jury

94: Days needed to select a jury, try and convict Dhzokhar Tsarnaev in the Boston Marathon bombing

More than 40: Media organizations requested seats in the courtroom

At least 10: Lawsuits have been filed against the theater