21020313200994 has 12 divisors (see below), whose sum is σ = 45544011935526. Its totient is φ = 7006771066992.

The previous prime is 21020313200969. The next prime is 21020313201011. The reversal of 21020313200994 is 49900231302012.

21020313200994 is a `hidden beast` number, since 210 + 2 + 0 + 31 + 320 + 0 + 9 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14226663830625 + 6793649370369 = 3771825^2 + 2606463^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 583897588899 + ... + 583897588934.

Almost surely, 2^{21020313200994} is an apocalyptic number.

21020313200994 is an abundant number, since it is smaller than the sum of its proper divisors (24523698734532).

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

21020313200994 is a wasteful number, since it uses less digits than its factorization.

21020313200994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167795177841 (or 1167795177838 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 21020313200994 in words is "twenty-one trillion, twenty billion, three hundred thirteen million, two hundred thousand, nine hundred ninety-four".