21203102332 has 12 divisors (see below), whose sum is σ = 37131441480. Its totient is φ = 10594119056.

The previous prime is 21203102281. The next prime is 21203102353. The reversal of 21203102332 is 23320130212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851607 + ... + 1863022.

It is an arithmetic number, because the mean of its divisors is an integer number (3094286790).

Almost surely, 2^21203102332 is an apocalyptic number.

It is an amenable number.

21203102332 is a deficient number, since it is larger than the sum of its proper divisors (15928339148).

21203102332 is a wasteful number, since it uses less digits than its factorization.

21203102332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716060 (or 3716058 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21203102332 its reverse (23320130212), we get a palindrome (44523232544).

The spelling of 21203102332 in words is "twenty-one billion, two hundred three million, one hundred two thousand, three hundred thirty-two".