21135156300000 has 216 divisors, whose sum is σ = 75124070861112. Its totient is φ = 5636041440000.

The previous prime is 21135156299977. The next prime is 21135156300043. The reversal of 21135156300000 is 365153112.

21135156300000 is a `hidden beast` number, since 2 + 1 + 1 + 351 + 5 + 6 + 300 + 0 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10841754 + ... + 12641753.

It is an arithmetic number, because the mean of its divisors is an integer number (347796624357).

Almost surely, 2^{21135156300000} is an apocalyptic number.

21135156300000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21135156300000 is an abundant number, since it is smaller than the sum of its proper divisors (53988914561112).

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

21135156300000 is an equidigital number, since it uses as much as digits as its factorization.

21135156300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23483548 (or 23483517 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The spelling of 21135156300000 in words is "twenty-one trillion, one hundred thirty-five billion, one hundred fifty-six million, three hundred thousand".