22153304021 has 4 divisors (see below), whose sum is σ = 22322413344. Its totient is φ = 21984194700.

The previous prime is 22153304003. The next prime is 22153304029. The reversal of 22153304021 is 12040335122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22153304021 - 2³⁰ = 21079562197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153304029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84554465 + ... + 84554726.

It is an arithmetic number, because the mean of its divisors is an integer number (5580603336).

Almost surely, 2^22153304021 is an apocalyptic number.

It is an amenable number.

22153304021 is a deficient number, since it is larger than the sum of its proper divisors (169109323).

22153304021 is a wasteful number, since it uses less digits than its factorization.

22153304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169109322.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 22153304021 its reverse (12040335122), we get a palindrome (34193639143).

The spelling of 22153304021 in words is "twenty-two billion, one hundred fifty-three million, three hundred four thousand, twenty-one".