20200020010021 has 32 divisors (see below), whose sum is σ = 20783589845760. Its totient is φ = 19627415691264.

The previous prime is 20200020010003. The next prime is 20200020010069. The reversal of 20200020010021 is 12001002000202.

It is a cyclic number.

It is not a de Polignac number, because 20200020010021 - 2²⁹ = 20199483139109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200020010921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 900448821 + ... + 900471253.

It is an arithmetic number, because the mean of its divisors is an integer number (649487182680).

Almost surely, 2^{20200020010021} is an apocalyptic number.

It is an amenable number.

20200020010021 is a deficient number, since it is larger than the sum of its proper divisors (583569835739).

20200020010021 is a wasteful number, since it uses less digits than its factorization.

20200020010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23325.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20200020010021 its reverse (12001002000202), we get a palindrome (32201022010223).

The spelling of 20200020010021 in words is "twenty trillion, two hundred billion, twenty million, ten thousand, twenty-one".