22904530821 has 24 divisors (see below), whose sum is σ = 33801715584. Its totient is φ = 14938842240.

The previous prime is 22904530807. The next prime is 22904530829. The reversal of 22904530821 is 12803540922.

It is a happy number.

22904530821 is a `hidden beast` number, since 2 + 290 + 45 + 308 + 21 = 666.

It is not a de Polignac number, because 22904530821 - 2⁶ = 22904530757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22904530829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1216086 + ... + 1234776.

It is an arithmetic number, because the mean of its divisors is an integer number (1408404816).

Almost surely, 2^22904530821 is an apocalyptic number.

It is an amenable number.

22904530821 is a deficient number, since it is larger than the sum of its proper divisors (10897184763).

22904530821 is a wasteful number, since it uses less digits than its factorization.

22904530821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21641 (or 21638 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 22904530821 in words is "twenty-two billion, nine hundred four million, five hundred thirty thousand, eight hundred twenty-one".