21201330032 has 40 divisors (see below), whose sum is σ = 42425856000. Its totient is φ = 10253096640.

The previous prime is 21201329923. The next prime is 21201330047. The reversal of 21201330032 is 23003310212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980813 + ... + 1002195.

It is an arithmetic number, because the mean of its divisors is an integer number (1060646400).

Almost surely, 2^21201330032 is an apocalyptic number.

It is an amenable number.

21201330032 is an abundant number, since it is smaller than the sum of its proper divisors (21224525968).

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

21201330032 is a wasteful number, since it uses less digits than its factorization.

21201330032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23421 (or 23415 counting only the distinct ones).

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

Adding to 21201330032 its reverse (23003310212), we get a palindrome (44204640244).

The spelling of 21201330032 in words is "twenty-one billion, two hundred one million, three hundred thirty thousand, thirty-two".