21356300251124 has 24 divisors (see below), whose sum is σ = 37845686561760. Its totient is φ = 10543897084896.

The previous prime is 21356300251061. The next prime is 21356300251163. The reversal of 21356300251124 is 42115200365312.

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, 81135539 + ... + 81398330.

It is an arithmetic number, because the mean of its divisors is an integer number (1576903606740).

Almost surely, 2^{21356300251124} is an apocalyptic number.

It is an amenable number.

21356300251124 is a deficient number, since it is larger than the sum of its proper divisors (16489386310636).

21356300251124 is a wasteful number, since it uses less digits than its factorization.

21356300251124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162534287 (or 162534285 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21356300251124 in words is "twenty-one trillion, three hundred fifty-six billion, three hundred million, two hundred fifty-one thousand, one hundred twenty-four".