22116065165 has 4 divisors (see below), whose sum is σ = 26539278204. Its totient is φ = 17692852128.

The previous prime is 22116065131. The next prime is 22116065201. The reversal of 22116065165 is 56156061122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3247746121 + 18868319044 = 56989^2 + 137362^2 .

It is a cyclic number.

It is not a de Polignac number, because 22116065165 - 2⁸ = 22116064909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2211606512 + ... + 2211606521.

It is an arithmetic number, because the mean of its divisors is an integer number (6634819551).

Almost surely, 2^22116065165 is an apocalyptic number.

It is an amenable number.

22116065165 is a deficient number, since it is larger than the sum of its proper divisors (4423213039).

22116065165 is an equidigital number, since it uses as much as digits as its factorization.

22116065165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423213038.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 22116065165 in words is "twenty-two billion, one hundred sixteen million, sixty-five thousand, one hundred sixty-five".