12111102111100 has 36 divisors (see below), whose sum is σ = 27664306931800. Its totient is φ = 4589470272960.

The previous prime is 12111102111041. The next prime is 12111102111103. The reversal of 12111102111100 is 111120111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111102111103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3187130235 + ... + 3187134034.

Almost surely, 2^{12111102111100} is an apocalyptic number.

12111102111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111102111100 is an abundant number, since it is smaller than the sum of its proper divisors (15553204820700).

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

12111102111100 is a wasteful number, since it uses less digits than its factorization.

12111102111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374264302 (or 6374264295 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 12111102111100 its reverse (111120111121), we get a palindrome (12222222222221).

The spelling of 12111102111100 in words is "twelve trillion, one hundred eleven billion, one hundred two million, one hundred eleven thousand, one hundred".