22012708165 has 16 divisors (see below), whose sum is σ = 30219184512. Its totient is φ = 15079264704.

The previous prime is 22012708163. The next prime is 22012708181. The reversal of 22012708165 is 56180721022.

It is a happy number.

It is not a de Polignac number, because 22012708165 - 2¹ = 22012708163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22012708165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012708163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280519 + ... + 350308.

It is an arithmetic number, because the mean of its divisors is an integer number (1888699032).

Almost surely, 2^22012708165 is an apocalyptic number.

It is an amenable number.

22012708165 is a deficient number, since it is larger than the sum of its proper divisors (8206476347).

22012708165 is an equidigital number, since it uses as much as digits as its factorization.

22012708165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631836.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 22012708165 in words is "twenty-two billion, twelve million, seven hundred eight thousand, one hundred sixty-five".