20200022102021 has 4 divisors (see below), whose sum is σ = 20200047524844. Its totient is φ = 20199996679200.

The previous prime is 20200022102003. The next prime is 20200022102027. The reversal of 20200022102021 is 12020122000202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8922682771396 + 11277339330625 = 2987086^2 + 3358175^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200022102021 - 2¹⁴ = 20200022085637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200022101987 and 20200022102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200022102027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11479790 + ... + 13121951.

It is an arithmetic number, because the mean of its divisors is an integer number (5050011881211).

Almost surely, 2^{20200022102021} is an apocalyptic number.

It is an amenable number.

20200022102021 is a deficient number, since it is larger than the sum of its proper divisors (25422823).

20200022102021 is an equidigital number, since it uses as much as digits as its factorization.

20200022102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25422822.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20200022102021 its reverse (12020122000202), we get a palindrome (32220144102223).

The spelling of 20200022102021 in words is "twenty trillion, two hundred billion, twenty-two million, one hundred two thousand, twenty-one".