22021564505156 has 12 divisors (see below), whose sum is σ = 38537812716480. Its totient is φ = 11010760871880.

The previous prime is 22021564505119. The next prime is 22021564505243. The reversal of 22021564505156 is 65150546512022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903840 + ... + 7243991.

It is an arithmetic number, because the mean of its divisors is an integer number (3211484393040).

Almost surely, 2^{22021564505156} is an apocalyptic number.

It is an amenable number.

22021564505156 is a deficient number, since it is larger than the sum of its proper divisors (16516248211324).

22021564505156 is a wasteful number, since it uses less digits than its factorization.

22021564505156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10690354 (or 10690352 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 22021564505156 in words is "twenty-two trillion, twenty-one billion, five hundred sixty-four million, five hundred five thousand, one hundred fifty-six".