21010015324 has 24 divisors (see below), whose sum is σ = 37884326480. Its totient is φ = 10187773056.

The previous prime is 21010015303. The next prime is 21010015349. The reversal of 21010015324 is 42351001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185769 + ... + 276640.

Almost surely, 2^21010015324 is an apocalyptic number.

It is an amenable number.

21010015324 is a deficient number, since it is larger than the sum of its proper divisors (16874311156).

21010015324 is a wasteful number, since it uses less digits than its factorization.

21010015324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462757 (or 462755 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21010015324 its reverse (42351001012), we get a palindrome (63361016336).

The spelling of 21010015324 in words is "twenty-one billion, ten million, fifteen thousand, three hundred twenty-four".