21201330332 has 48 divisors (see below), whose sum is σ = 45997828800. Its totient is φ = 8326098432.

The previous prime is 21201330323. The next prime is 21201330347. The reversal of 21201330332 is 23303310212.

It is a congruent number.

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, 162707 + ... + 262442.

It is an arithmetic number, because the mean of its divisors is an integer number (958288100).

Almost surely, 2^21201330332 is an apocalyptic number.

It is an amenable number.

21201330332 is an abundant number, since it is smaller than the sum of its proper divisors (24796498468).

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

21201330332 is a wasteful number, since it uses less digits than its factorization.

21201330332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425310 (or 425308 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21201330332 its reverse (23303310212), we get a palindrome (44504640544).

The spelling of 21201330332 in words is "twenty-one billion, two hundred one million, three hundred thirty thousand, three hundred thirty-two".