21332403124 has 12 divisors (see below), whose sum is σ = 38954823264. Its totient is φ = 10202453624.

The previous prime is 21332403109. The next prime is 21332403149. The reversal of 21332403124 is 42130423312.

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, 115936882 + ... + 115937065.

It is an arithmetic number, because the mean of its divisors is an integer number (3246235272).

Almost surely, 2^21332403124 is an apocalyptic number.

It is an amenable number.

21332403124 is a deficient number, since it is larger than the sum of its proper divisors (17622420140).

21332403124 is a wasteful number, since it uses less digits than its factorization.

21332403124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231873974 (or 231873972 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21332403124 its reverse (42130423312), we get a palindrome (63462826436).

The spelling of 21332403124 in words is "twenty-one billion, three hundred thirty-two million, four hundred three thousand, one hundred twenty-four".