202020120200020 has 48 divisors (see below), whose sum is σ = 438875528288400. Its totient is φ = 78020811187200.

The previous prime is 202020120199999. The next prime is 202020120200071. The reversal of 202020120200020 is 20002021020202.

It can be written as a sum of positive squares in 8 ways, for example, as 2043075727044 + 199977044472976 = 1429362^2 + 14141324^2 .

It is a congruent number.

It is an unprimeable number.

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, 60492496 + ... + 63744664.

It is an arithmetic number, because the mean of its divisors is an integer number (9143240172675).

Almost surely, 2^{202020120200020} is an apocalyptic number.

202020120200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020120200020 is an abundant number, since it is smaller than the sum of its proper divisors (236855408088380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202020120200020 is a wasteful number, since it uses less digits than its factorization.

202020120200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359308 (or 3359306 counting only the distinct ones).

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

Adding to 202020120200020 its reverse (20002021020202), we get a palindrome (222022141220222).

The spelling of 202020120200020 in words is "two hundred two trillion, twenty billion, one hundred twenty million, two hundred thousand, twenty".