202020120202021 has 64 divisors (see below), whose sum is σ = 235100369894400. Its totient is φ = 171896836608000.

The previous prime is 202020120201959. The next prime is 202020120202037. The reversal of 202020120202021 is 120202021020202.

202020120202021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 202020120202021 - 2¹⁵ = 202020120169253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202020120201986 and 202020120202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202020120202051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 321908740 + ... + 322535698.

It is an arithmetic number, because the mean of its divisors is an integer number (3673443279600).

Almost surely, 2^{202020120202021} is an apocalyptic number.

It is an amenable number.

202020120202021 is a deficient number, since it is larger than the sum of its proper divisors (33080249692379).

202020120202021 is a wasteful number, since it uses less digits than its factorization.

202020120202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627310.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202020120202021 its reverse (120202021020202), we get a palindrome (322222141222223).

It can be divided in two parts, 2020201 and 20202021, that added together give a palindrome (22222222).

The spelling of 202020120202021 in words is "two hundred two trillion, twenty billion, one hundred twenty million, two hundred two thousand, twenty-one".