2020202000021 has 2 divisors, whose sum is σ = 2020202000022. Its totient is φ = 2020202000020.

The previous prime is 2020201999943. The next prime is 2020202000051. The reversal of 2020202000021 is 1200002020202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1015285972996 + 1004916027025 = 1007614^2 + 1002455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020202000021 - 2¹⁴ = 2020201983637 is a prime.

It is a super-2 number, since 2×2020202000021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2020201999966 and 2020202000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020202000051) by changing a digit.

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 as a sum of consecutive naturals, namely, 1010101000010 + 1010101000011.

It is an arithmetic number, because the mean of its divisors is an integer number (1010101000011).

Almost surely, 2^{2020202000021} is an apocalyptic number.

It is an amenable number.

2020202000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020202000021 is an equidigital number, since it uses as much as digits as its factorization.

2020202000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 2020202000021 its reverse (1200002020202), we get a palindrome (3220204020223).

The spelling of 2020202000021 in words is "two trillion, twenty billion, two hundred two million, twenty-one", and thus it is an aban number.