213345131460021 has 24 divisors (see below), whose sum is σ = 336389144757120. Its totient is φ = 129219719054400.

The previous prime is 213345131459923. The next prime is 213345131460091. The reversal of 213345131460021 is 120064131543312.

213345131460021 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 4 + 5 + 13 + 14 + 600 + 21 = 666.

It is not a de Polignac number, because 213345131460021 - 2²² = 213345127265717 is a prime.

It is a super-2 number, since 2×213345131460021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213345131460091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669511725 + ... + 669830306.

It is an arithmetic number, because the mean of its divisors is an integer number (14016214364880).

Almost surely, 2^{213345131460021} is an apocalyptic number.

It is an amenable number.

213345131460021 is a deficient number, since it is larger than the sum of its proper divisors (123044013297099).

213345131460021 is a wasteful number, since it uses less digits than its factorization.

213345131460021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339343657 (or 1339343654 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 213345131460021 in words is "two hundred thirteen trillion, three hundred forty-five billion, one hundred thirty-one million, four hundred sixty thousand, twenty-one".