12111021111200 has 72 divisors (see below), whose sum is σ = 32253851246400. Its totient is φ = 4404007673600.

The previous prime is 12111021111199. The next prime is 12111021111227. The reversal of 12111021111200 is 211112011121.

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, 688117400 + ... + 688134999.

It is an arithmetic number, because the mean of its divisors is an integer number (447970156200).

Almost surely, 2^{12111021111200} is an apocalyptic number.

12111021111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111021111200 is an abundant number, since it is smaller than the sum of its proper divisors (20142830135200).

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

12111021111200 is a wasteful number, since it uses less digits than its factorization.

12111021111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376252430 (or 1376252417 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12111021111200 its reverse (211112011121), we get a palindrome (12322133122321).

It can be divided in two parts, 12111021 and 111200, that added together give a palindrome (12222221).

The spelling of 12111021111200 in words is "twelve trillion, one hundred eleven billion, twenty-one million, one hundred eleven thousand, two hundred".