21161177311022 has 16 divisors (see below), whose sum is σ = 36276378439680. Its totient is φ = 9069057370968.

The previous prime is 21161177311003. The next prime is 21161177311061. The reversal of 21161177311022 is 22011377116112.

It is a congruent number.

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, 7221443 + ... + 9719649.

It is an arithmetic number, because the mean of its divisors is an integer number (2267273652480).

Almost surely, 2^{21161177311022} is an apocalyptic number.

21161177311022 is a deficient number, since it is larger than the sum of its proper divisors (15115201128658).

21161177311022 is a wasteful number, since it uses less digits than its factorization.

21161177311022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103255.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 21161177311022 in words is "twenty-one trillion, one hundred sixty-one billion, one hundred seventy-seven million, three hundred eleven thousand, twenty-two".