12111012012120 has 64 divisors (see below), whose sum is σ = 41523469758720. Its totient is φ = 2768231316864.

The previous prime is 12111012012103. The next prime is 12111012012163. The reversal of 12111012012120 is 2121021011121.

It is a happy number.

It is a super-2 number, since 2×12111012012120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12111012012120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7208934882 + ... + 7208936561.

It is an arithmetic number, because the mean of its divisors is an integer number (648804214980).

Almost surely, 2^{12111012012120} is an apocalyptic number.

12111012012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111012012120 is an abundant number, since it is smaller than the sum of its proper divisors (29412457746600).

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

12111012012120 is a wasteful number, since it uses less digits than its factorization.

12111012012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14417871464 (or 14417871460 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111012012120 its reverse (2121021011121), we get a palindrome (14232033023241).

The spelling of 12111012012120 in words is "twelve trillion, one hundred eleven billion, twelve million, twelve thousand, one hundred twenty".