21103301232 has 60 divisors (see below), whose sum is σ = 63603010744. Its totient is φ = 6493322880.

The previous prime is 21103301213. The next prime is 21103301249. The reversal of 21103301232 is 23210330112.

21103301232 is a `hidden beast` number, since 211 + 0 + 330 + 123 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5634694 + ... + 5638437.

Almost surely, 2^21103301232 is an apocalyptic number.

It is an amenable number.

21103301232 is an abundant number, since it is smaller than the sum of its proper divisors (42499709512).

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

21103301232 is a wasteful number, since it uses less digits than its factorization.

21103301232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11273158 (or 11273149 counting only the distinct ones).

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

Adding to 21103301232 its reverse (23210330112), we get a palindrome (44313631344).

The spelling of 21103301232 in words is "twenty-one billion, one hundred three million, three hundred one thousand, two hundred thirty-two".