12021111211120 has 80 divisors (see below), whose sum is σ = 31198977101952. Its totient is φ = 4269654708480.

The previous prime is 12021111211111. The next prime is 12021111211183. The reversal of 12021111211120 is 2111211112021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×12021111211120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12021111211094 and 12021111211103.

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, 158803482 + ... + 158879161.

Almost surely, 2^{12021111211120} is an apocalyptic number.

12021111211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021111211120 is an abundant number, since it is smaller than the sum of its proper divisors (19177865890832).

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

12021111211120 is a wasteful number, since it uses less digits than its factorization.

12021111211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317682710 (or 317682704 counting only the distinct ones).

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

Adding to 12021111211120 its reverse (2111211112021), we get a palindrome (14132322323141).

Subtracting from 12021111211120 its reverse (2111211112021), we obtain a palindrome (9909900099099).

The spelling of 12021111211120 in words is "twelve trillion, twenty-one billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty".