202020002012021 has 16 divisors (see below), whose sum is σ = 203689733385600. Its totient is φ = 200353438656000.

The previous prime is 202020002011973. The next prime is 202020002012041. The reversal of 202020002012021 is 120210200020202.

It is a cyclic number.

It is not a de Polignac number, because 202020002012021 - 2³⁰ = 202018928270197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202020002011987 and 202020002012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202020002012041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735896816 + ... + 736171286.

It is an arithmetic number, because the mean of its divisors is an integer number (12730608336600).

Almost surely, 2^{202020002012021} is an apocalyptic number.

It is an amenable number.

202020002012021 is a deficient number, since it is larger than the sum of its proper divisors (1669731373579).

202020002012021 is a wasteful number, since it uses less digits than its factorization.

202020002012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280220.

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

Adding to 202020002012021 its reverse (120210200020202), we get a palindrome (322230202032223).

The spelling of 202020002012021 in words is "two hundred two trillion, twenty billion, two million, twelve thousand, twenty-one".