Reveal: There are six words in the grid that when a number is added to them become a popular movie- TWELVE 20A, 29A FOUR, 22A THIRTEEN, 44A FIFTY-SEVEN, THREE 49A, SIXTEEN 51A. These numbers, in grid order, spell OCEANS. The number associated with OCEANS that is a movie is ELEVEN. (Not being a movie person, I didn’t realize how many “Ocean’s” movies there are!, so I’ve accepted multiple answers. Also, I didn’t know that there is more than one “Apollo” movie. Sorry!”)
Excellent meta, LarsCaine! If you're ever interested in posting a meta on the XWord-Muggles site, please let me know. My email is rakennedy16@gmail.com. Thanks!
Hah. I tried so many permutations of the MATH involved with 12, 13, 4, 57, 3, 16... adding them, multiplying them (TIMES), adding the differences between those numbers and their clue numbers... adding the ones that come after the words and subtracting the ones that come before their words... nada. Sigh. LOL. Finally I took a look at the squares for those numbers...
^Yes, please, to what Capn Rick said! Not only could we use more meta constructors on XWord-Muggles, you'd also get more coverage. People need to discover your trove. Fun stuff! ;)