Some OMBY trivia:

135 chapters + epilogue

11,060 pages

10,395 puzzles

distribution of puzzle lengths:
4: 261
5: 319
6: 702
7: 1,838
8: 4,078
9: 1,921
10: 652
11: 328
12: 159
13: 60
14: 77

209,321 words
35,664 scrambled words (17%)
3.43 scrambled words per puzzle (avg)

1,176,358 characters
167,048 scrambled characters (14%)
16 scrambled characters per puzzle (avg)

2,432 paragraphs

7,107 periods
1,740 exclamation marks
997 question marks

18,944 commas
4,135 semicolons
1,588 em-dashes
192 colons
2 ellipses