12111012021120 has 64 divisors (see below), whose sum is σ = 38603850823440. Its totient is φ = 3229603205120.

The previous prime is 12111012021071. The next prime is 12111012021131. The reversal of 12111012021120 is 2112021011121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×12111012021120² (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 12111012021120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3153907461 + ... + 3153911300.

Almost surely, 2^{12111012021120} is an apocalyptic number.

12111012021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111012021120 is an abundant number, since it is smaller than the sum of its proper divisors (26492838802320).

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

12111012021120 is an equidigital number, since it uses as much as digits as its factorization.

12111012021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307818783 (or 6307818771 counting only the distinct ones).

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

Adding to 12111012021120 its reverse (2112021011121), we get a palindrome (14223033032241).

The spelling of 12111012021120 in words is "twelve trillion, one hundred eleven billion, twelve million, twenty-one thousand, one hundred twenty".