21010032132 has 48 divisors (see below), whose sum is σ = 50844831744. Its totient is φ = 6745284000.

The previous prime is 21010032091. The next prime is 21010032161. The reversal of 21010032132 is 23123001012.

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, 55344 + ... + 212327.

It is an arithmetic number, because the mean of its divisors is an integer number (1059267328).

Almost surely, 2^21010032132 is an apocalyptic number.

It is an amenable number.

21010032132 is an abundant number, since it is smaller than the sum of its proper divisors (29834799612).

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

21010032132 is a wasteful number, since it uses less digits than its factorization.

21010032132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267920 (or 267918 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21010032132 its reverse (23123001012), we get a palindrome (44133033144).

The spelling of 21010032132 in words is "twenty-one billion, ten million, thirty-two thousand, one hundred thirty-two".