21924795922 has 8 divisors (see below), whose sum is σ = 32967603900. Its totient is φ = 10935594624.

The previous prime is 21924795917. The next prime is 21924795929. The reversal of 21924795922 is 22959742912.

It can be written as a sum of positive squares in 2 ways, for example, as 14340302001 + 7584493921 = 119751^2 + 87089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21924795922.

It is not an unprimeable number, because it can be changed into a prime (21924795929) 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, 13400647 + ... + 13402282.

Almost surely, 2^21924795922 is an apocalyptic number.

21924795922 is a deficient number, since it is larger than the sum of its proper divisors (11042807978).

21924795922 is a wasteful number, since it uses less digits than its factorization.

21924795922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26803340.

The product of its digits is 1632960, while the sum is 52.

The spelling of 21924795922 in words is "twenty-one billion, nine hundred twenty-four million, seven hundred ninety-five thousand, nine hundred twenty-two".