21303120032 has 24 divisors (see below), whose sum is σ = 42015849876. Its totient is φ = 10632428032.

The previous prime is 21303119987. The next prime is 21303120043. The reversal of 21303120032 is 23002130312.

It can be written as a sum of positive squares in 2 ways, for example, as 21244811536 + 58308496 = 145756^2 + 7636^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579773 + ... + 615420.

Almost surely, 2^21303120032 is an apocalyptic number.

It is an amenable number.

21303120032 is a deficient number, since it is larger than the sum of its proper divisors (20712729844).

21303120032 is a wasteful number, since it uses less digits than its factorization.

21303120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195760 (or 1195752 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21303120032 its reverse (23002130312), we get a palindrome (44305250344).

The spelling of 21303120032 in words is "twenty-one billion, three hundred three million, one hundred twenty thousand, thirty-two".