21164361322 has 16 divisors (see below), whose sum is σ = 34191118080. Its totient is φ = 9767442672.

The previous prime is 21164361311. The next prime is 21164361331. The reversal of 21164361322 is 22316346112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509343 + ... + 549325.

It is an arithmetic number, because the mean of its divisors is an integer number (2136944880).

Almost surely, 2^21164361322 is an apocalyptic number.

21164361322 is a deficient number, since it is larger than the sum of its proper divisors (13026756758).

21164361322 is a wasteful number, since it uses less digits than its factorization.

21164361322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60357.

The product of its digits is 10368, while the sum is 31.

The spelling of 21164361322 in words is "twenty-one billion, one hundred sixty-four million, three hundred sixty-one thousand, three hundred twenty-two".