21332010320 has 40 divisors (see below), whose sum is σ = 50652186624. Its totient is φ = 8351253632.

The previous prime is 21332010283. The next prime is 21332010347. The reversal of 21332010320 is 2301023312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2832944 + ... + 2840463.

Almost surely, 2^21332010320 is an apocalyptic number.

21332010320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332010320 is an abundant number, since it is smaller than the sum of its proper divisors (29320176304).

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

21332010320 is a wasteful number, since it uses less digits than its factorization.

21332010320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673467 (or 5673461 counting only the distinct ones).

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

Adding to 21332010320 its reverse (2301023312), we get a palindrome (23633033632).

The spelling of 21332010320 in words is "twenty-one billion, three hundred thirty-two million, ten thousand, three hundred twenty".