21303011232 has 96 divisors (see below), whose sum is σ = 62159025600. Its totient is φ = 7098119424.

The previous prime is 21303011221. The next prime is 21303011291. The reversal of 21303011232 is 23211030312.

21303011232 is a `hidden beast` number, since 2 + 130 + 301 + 1 + 232 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3761619 + ... + 3767277.

It is an arithmetic number, because the mean of its divisors is an integer number (647489850).

Almost surely, 2^21303011232 is an apocalyptic number.

It is an amenable number.

21303011232 is an abundant number, since it is smaller than the sum of its proper divisors (40856014368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303011232 is a wasteful number, since it uses less digits than its factorization.

21303011232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035 (or 10021 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21303011232 its reverse (23211030312), we get a palindrome (44514041544).

The spelling of 21303011232 in words is "twenty-one billion, three hundred three million, eleven thousand, two hundred thirty-two".