22175164921 has 32 divisors (see below), whose sum is σ = 27991547136. Its totient is φ = 17096832000.

The previous prime is 22175164903. The next prime is 22175164943. The reversal of 22175164921 is 12946157122.

It is a cyclic number.

It is not a de Polignac number, because 22175164921 - 2¹⁹ = 22174640633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22175164901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3619741 + ... + 3625861.

It is an arithmetic number, because the mean of its divisors is an integer number (874735848).

Almost surely, 2^22175164921 is an apocalyptic number.

It is an amenable number.

22175164921 is a deficient number, since it is larger than the sum of its proper divisors (5816382215).

22175164921 is a wasteful number, since it uses less digits than its factorization.

22175164921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153.

The product of its digits is 60480, while the sum is 40.

The spelling of 22175164921 in words is "twenty-two billion, one hundred seventy-five million, one hundred sixty-four thousand, nine hundred twenty-one".