12121113536 has 84 divisors (see below), whose sum is σ = 29452595400. Its totient is φ = 4921330176.

The previous prime is 12121113527. The next prime is 12121113547. The reversal of 12121113536 is 63531112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42131 + ... + 161298.

Almost surely, 2^12121113536 is an apocalyptic number.

12121113536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12121113536 is an abundant number, since it is smaller than the sum of its proper divisors (17331481864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121113536 is a wasteful number, since it uses less digits than its factorization.

12121113536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203474 (or 203457 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

Adding to 12121113536 its reverse (63531112121), we get a palindrome (75652225657).

The spelling of 12121113536 in words is "twelve billion, one hundred twenty-one million, one hundred thirteen thousand, five hundred thirty-six".