21102013324 has 12 divisors (see below), whose sum is σ = 42204026704. Its totient is φ = 9043719984.

The previous prime is 21102013319. The next prime is 21102013381. The reversal of 21102013324 is 42331020112.

It is a happy number.

21102013324 is an admirable 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, 376821639 + ... + 376821694.

Almost surely, 2^21102013324 is an apocalyptic number.

It is an amenable number.

21102013324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21102013324 is a wasteful number, since it uses less digits than its factorization.

21102013324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753643344 (or 753643342 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21102013324 its reverse (42331020112), we get a palindrome (63433033436).

The spelling of 21102013324 in words is "twenty-one billion, one hundred two million, thirteen thousand, three hundred twenty-four".