22657121247 has 16 divisors (see below), whose sum is σ = 31258039680. Its totient is φ = 14580703200.

The previous prime is 22657121213. The next prime is 22657121257. The reversal of 22657121247 is 74212175622.

It is a happy number.

It is not a de Polignac number, because 22657121247 - 2⁷ = 22657121119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22657121257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409972 + ... + 461942.

It is an arithmetic number, because the mean of its divisors is an integer number (1953627480).

Almost surely, 2^22657121247 is an apocalyptic number.

22657121247 is a deficient number, since it is larger than the sum of its proper divisors (8600918433).

22657121247 is a wasteful number, since it uses less digits than its factorization.

22657121247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57014.

The product of its digits is 94080, while the sum is 39.

Adding to 22657121247 its reverse (74212175622), we get a palindrome (96869296869).

The spelling of 22657121247 in words is "twenty-two billion, six hundred fifty-seven million, one hundred twenty-one thousand, two hundred forty-seven".