21611167711422 has 16 divisors (see below), whose sum is σ = 43316913842832. Its totient is φ = 7187959500480.

The previous prime is 21611167711417. The next prime is 21611167711423. The reversal of 21611167711422 is 22411776111612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21611167711423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3940764529 + ... + 3940770012.

It is an arithmetic number, because the mean of its divisors is an integer number (2707307115177).

Almost surely, 2^{21611167711422} is an apocalyptic number.

21611167711422 is an abundant number, since it is smaller than the sum of its proper divisors (21705746131410).

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

21611167711422 is a wasteful number, since it uses less digits than its factorization.

21611167711422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7881535003.

The product of its digits is 56448, while the sum is 42.

The spelling of 21611167711422 in words is "twenty-one trillion, six hundred eleven billion, one hundred sixty-seven million, seven hundred eleven thousand, four hundred twenty-two".