The largest 12- digit number where repeated digits are allowed?

Answer 1

If repeated digits are allowed, then the largest 12-digit number is 999,999,999,999 .

If repeated digits are not allowed, then the largest 12-digit number is 989,898,989,898 .

If the same digit can't be used more than once, then the largest possible number has only

10 digits. The number is 9,876,543,210 .

Answer 2

Well, honey, the largest 12-digit number with repeated digits allowed is 9,999,999,999,999. I mean, unless you want to get fancy and start throwing in letters or emojis, but I doubt that's what you're looking for. So there you have it, the biggest 12-digit number you can get with the same digit repeated over and over again.

Answer 3

Use the highest possible digit (9) for all 12 digits.