22111012002120 has 64 divisors (see below), whose sum is σ = 66517807824000. Its totient is φ = 5879845705728.

The previous prime is 22111012001993. The next prime is 22111012002239. The reversal of 22111012002120 is 2120021011122.

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 22111012002120.

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, 256584265 + ... + 256670424.

It is an arithmetic number, because the mean of its divisors is an integer number (1039340747250).

Almost surely, 2^{22111012002120} is an apocalyptic number.

22111012002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111012002120 is an abundant number, since it is smaller than the sum of its proper divisors (44406795821880).

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

22111012002120 is a wasteful number, since it uses less digits than its factorization.

22111012002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513255062 (or 513255058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22111012002120 its reverse (2120021011122), we get a palindrome (24231033013242).

The spelling of 22111012002120 in words is "twenty-two trillion, one hundred eleven billion, twelve million, two thousand, one hundred twenty".