21922731210 has 32 divisors (see below), whose sum is σ = 52642369152. Its totient is φ = 5842971200.

The previous prime is 21922731209. The next prime is 21922731227. The reversal of 21922731210 is 1213722912.

It is a super-2 number, since 2×21922731210² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 135174 + ... + 249233.

It is an arithmetic number, because the mean of its divisors is an integer number (1645074036).

Almost surely, 2^21922731210 is an apocalyptic number.

21922731210 is an abundant number, since it is smaller than the sum of its proper divisors (30719637942).

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

21922731210 is a wasteful number, since it uses less digits than its factorization.

21922731210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386318.

The product of its (nonzero) digits is 3024, while the sum is 30.

The spelling of 21922731210 in words is "twenty-one billion, nine hundred twenty-two million, seven hundred thirty-one thousand, two hundred ten".