22156156013236 has 24 divisors (see below), whose sum is σ = 44312428714176. Its totient is φ = 9495470429760.

The previous prime is 22156156013227. The next prime is 22156156013237. The reversal of 22156156013236 is 63231065165122.

It is a junction number, because it is equal to n+sod(n) for n = 22156156013192 and 22156156013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156156013237) 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, 13193355 + ... + 14777581.

It is an arithmetic number, because the mean of its divisors is an integer number (1846351196424).

Almost surely, 2^{22156156013236} is an apocalyptic number.

It is an amenable number.

22156156013236 is an abundant number, since it is smaller than the sum of its proper divisors (22156272700940).

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

22156156013236 is a wasteful number, since it uses less digits than its factorization.

22156156013236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083719 (or 2083717 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 22156156013236 in words is "twenty-two trillion, one hundred fifty-six billion, one hundred fifty-six million, thirteen thousand, two hundred thirty-six".