21203032332 has 24 divisors (see below), whose sum is σ = 52383962736. Its totient is φ = 6651931648.

The previous prime is 21203032259. The next prime is 21203032337. The reversal of 21203032332 is 23323030212.

It is a junction number, because it is equal to n+sod(n) for n = 21203032299 and 21203032308.

It is not an unprimeable number, because it can be changed into a prime (21203032337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51968013 + ... + 51968420.

It is an arithmetic number, because the mean of its divisors is an integer number (2182665114).

Almost surely, 2^21203032332 is an apocalyptic number.

It is an amenable number.

21203032332 is an abundant number, since it is smaller than the sum of its proper divisors (31180930404).

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

21203032332 is a wasteful number, since it uses less digits than its factorization.

21203032332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103936457 (or 103936455 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21203032332 its reverse (23323030212), we get a palindrome (44526062544).

The spelling of 21203032332 in words is "twenty-one billion, two hundred three million, thirty-two thousand, three hundred thirty-two".