12366712500021 has 24 divisors (see below), whose sum is σ = 19522566115104. Its totient is φ = 7481275270560.

The previous prime is 12366712500019. The next prime is 12366712500067. The reversal of 12366712500021 is 12000521766321.

12366712500021 is a `hidden beast` number, since 1 + 2 + 3 + 66 + 71 + 2 + 500 + 0 + 21 = 666.

It is not a de Polignac number, because 12366712500021 - 2¹ = 12366712500019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12366712500091) 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, 114128926 + ... + 114237231.

It is an arithmetic number, because the mean of its divisors is an integer number (813440254796).

Almost surely, 2^{12366712500021} is an apocalyptic number.

12366712500021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12366712500021 is a deficient number, since it is larger than the sum of its proper divisors (7155853615083).

12366712500021 is a wasteful number, since it uses less digits than its factorization.

12366712500021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228366721 (or 228366718 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 12366712500021 in words is "twelve trillion, three hundred sixty-six billion, seven hundred twelve million, five hundred thousand, twenty-one".