20202000202021 has 16 divisors (see below), whose sum is σ = 22046523932160. Its totient is φ = 18358807175280.

The previous prime is 20202000202019. The next prime is 20202000202039. The reversal of 20202000202021 is 12020200020202.

It is not a de Polignac number, because 20202000202021 - 2¹ = 20202000202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202000201992 and 20202000202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202000209021) 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 in 15 ways as a sum of consecutive naturals, for example, 699815830 + ... + 699844696.

It is an arithmetic number, because the mean of its divisors is an integer number (1377907745760).

Almost surely, 2^{20202000202021} is an apocalyptic number.

It is an amenable number.

20202000202021 is a deficient number, since it is larger than the sum of its proper divisors (1844523730139).

20202000202021 is a wasteful number, since it uses less digits than its factorization.

20202000202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49704.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20202000202021 its reverse (12020200020202), we get a palindrome (32222200222223).

The spelling of 20202000202021 in words is "twenty trillion, two hundred two billion, two hundred two thousand, twenty-one".