21204072360000 has 210 divisors, whose sum is σ = 75947746365062. Its totient is φ = 5654419200000.

The previous prime is 21204072359959. The next prime is 21204072360019. The reversal of 21204072360000 is 6327040212.

21204072360000 is a `hidden beast` number, since 2 + 1 + 20 + 407 + 236 + 0 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 7845690632256 + 13358381727744 = 2801016^2 + 3654912^2 .

It is a super-2 number, since 2×21204072360000² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 29090101 + ... + 29810100.

Almost surely, 2^{21204072360000} is an apocalyptic number.

21204072360000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21204072360000 is an abundant number, since it is smaller than the sum of its proper divisors (54743674005062).

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

21204072360000 is an equidigital number, since it uses as much as digits as its factorization.

21204072360000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58900239 (or 58900211 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The spelling of 21204072360000 in words is "twenty-one trillion, two hundred four billion, seventy-two million, three hundred sixty thousand".