21200020332 has 48 divisors (see below), whose sum is σ = 49725043200. Its totient is φ = 7029823680.

The previous prime is 21200020327. The next prime is 21200020343. The reversal of 21200020332 is 23302000212.

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, 4204669 + ... + 4209707.

It is an arithmetic number, because the mean of its divisors is an integer number (1035938400).

Almost surely, 2^21200020332 is an apocalyptic number.

It is an amenable number.

21200020332 is an abundant number, since it is smaller than the sum of its proper divisors (28525022868).

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

21200020332 is a wasteful number, since it uses less digits than its factorization.

21200020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6806 (or 6804 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21200020332 its reverse (23302000212), we get a palindrome (44502020544).

The spelling of 21200020332 in words is "twenty-one billion, two hundred million, twenty thousand, three hundred thirty-two".