21213362310264 has 96 divisors (see below), whose sum is σ = 57560171011200. Its totient is φ = 7057915126080.

The previous prime is 21213362310227. The next prime is 21213362310293. The reversal of 21213362310264 is 46201326331212.

21213362310264 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 3 + 623 + 1 + 0 + 26 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 683867347 + ... + 683898365.

It is an arithmetic number, because the mean of its divisors is an integer number (599585114700).

Almost surely, 2^{21213362310264} is an apocalyptic number.

21213362310264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21213362310264 is an abundant number, since it is smaller than the sum of its proper divisors (36346808700936).

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

21213362310264 is a wasteful number, since it uses less digits than its factorization.

21213362310264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48465 (or 48458 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 21213362310264 its reverse (46201326331212), we get a palindrome (67414688641476).

The spelling of 21213362310264 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-two million, three hundred ten thousand, two hundred sixty-four".