21201334332 has 24 divisors (see below), whose sum is σ = 50806802256. Its totient is φ = 6876108288.

The previous prime is 21201334309. The next prime is 21201334391. The reversal of 21201334332 is 23343310212.

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, 23874933 + ... + 23875820.

It is an arithmetic number, because the mean of its divisors is an integer number (2116950094).

Almost surely, 2^21201334332 is an apocalyptic number.

It is an amenable number.

21201334332 is an abundant number, since it is smaller than the sum of its proper divisors (29605467924).

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

21201334332 is a wasteful number, since it uses less digits than its factorization.

21201334332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47750797 (or 47750795 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21201334332 its reverse (23343310212), we get a palindrome (44544644544).

The spelling of 21201334332 in words is "twenty-one billion, two hundred one million, three hundred thirty-four thousand, three hundred thirty-two".