22012072173 has 24 divisors (see below), whose sum is σ = 39132574208. Its totient is φ = 11610762912.

The previous prime is 22012072157. The next prime is 22012072177. The reversal of 22012072173 is 37127021022.

It is not a de Polignac number, because 22012072173 - 2⁴ = 22012072157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012072177) 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 23 ways as a sum of consecutive naturals, for example, 13437565 + ... + 13439202.

Almost surely, 2^22012072173 is an apocalyptic number.

It is an amenable number.

22012072173 is a deficient number, since it is larger than the sum of its proper divisors (17120502035).

22012072173 is a wasteful number, since it uses less digits than its factorization.

22012072173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26876793 (or 26876790 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 22012072173 its reverse (37127021022), we get a palindrome (59139093195).

The spelling of 22012072173 in words is "twenty-two billion, twelve million, seventy-two thousand, one hundred seventy-three".