22989455021 has 4 divisors (see below), whose sum is σ = 24757874652. Its totient is φ = 21221035392.

The previous prime is 22989454973. The next prime is 22989455053. The reversal of 22989455021 is 12055498922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6345874921 + 16643580100 = 79661^2 + 129010^2 .

It is a cyclic number.

It is not a de Polignac number, because 22989455021 - 2²⁶ = 22922346157 is a prime.

It is a super-2 number, since 2×22989455021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22989455081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884209796 + ... + 884209821.

It is an arithmetic number, because the mean of its divisors is an integer number (6189468663).

Almost surely, 2^22989455021 is an apocalyptic number.

It is an amenable number.

22989455021 is a deficient number, since it is larger than the sum of its proper divisors (1768419631).

22989455021 is a wasteful number, since it uses less digits than its factorization.

22989455021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768419630.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 22989455021 in words is "twenty-two billion, nine hundred eighty-nine million, four hundred fifty-five thousand, twenty-one".