22156331634155 has 16 divisors (see below), whose sum is σ = 27154490647680. Its totient is φ = 17347170158592.

The previous prime is 22156331634133. The next prime is 22156331634167. The reversal of 22156331634155 is 55143613365122.

It is a cyclic number.

It is not a de Polignac number, because 22156331634155 - 2³⁰ = 22155257892331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3280307 + ... + 7421123.

It is an arithmetic number, because the mean of its divisors is an integer number (1697155665480).

Almost surely, 2^{22156331634155} is an apocalyptic number.

22156331634155 is a deficient number, since it is larger than the sum of its proper divisors (4998159013525).

22156331634155 is a wasteful number, since it uses less digits than its factorization.

22156331634155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163638.

The product of its digits is 1944000, while the sum is 47.

Adding to 22156331634155 its reverse (55143613365122), we get a palindrome (77299944999277).

The spelling of 22156331634155 in words is "twenty-two trillion, one hundred fifty-six billion, three hundred thirty-one million, six hundred thirty-four thousand, one hundred fifty-five".