22111012972 has 48 divisors (see below), whose sum is σ = 40795967520. Its totient is φ = 10475232768.

The previous prime is 22111012969. The next prime is 22111012981. The reversal of 22111012972 is 27921011122.

It is a self number, because there is not a number n which added to its sum of digits gives 22111012972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797698 + ... + 824950.

It is an arithmetic number, because the mean of its divisors is an integer number (849915990).

Almost surely, 2^22111012972 is an apocalyptic number.

It is an amenable number.

22111012972 is a deficient number, since it is larger than the sum of its proper divisors (18684954548).

22111012972 is a wasteful number, since it uses less digits than its factorization.

22111012972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27442 (or 27440 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 22111012972 in words is "twenty-two billion, one hundred eleven million, twelve thousand, nine hundred seventy-two".