21213363130024 has 32 divisors (see below), whose sum is σ = 44697052753920. Its totient is φ = 9365096765376.

The previous prime is 21213363129989. The next prime is 21213363130067. The reversal of 21213363130024 is 42003136331212.

It is a happy 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, 4434229032 + ... + 4434233815.

It is an arithmetic number, because the mean of its divisors is an integer number (1396782898560).

Almost surely, 2^{21213363130024} is an apocalyptic number.

It is an amenable number.

21213363130024 is an abundant number, since it is smaller than the sum of its proper divisors (23483689623896).

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

21213363130024 is a wasteful number, since it uses less digits than its factorization.

21213363130024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8868462889 (or 8868462885 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 21213363130024 its reverse (42003136331212), we get a palindrome (63216499461236).

The spelling of 21213363130024 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-three million, one hundred thirty thousand, twenty-four".