202020001220 has 24 divisors (see below), whose sum is σ = 424450152000. Its totient is φ = 80768352992.

The previous prime is 202020001207. The next prime is 202020001229. The reversal of 202020001220 is 22100020202.

It is not an unprimeable number, because it can be changed into a prime (202020001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2436170 + ... + 2517729.

It is an arithmetic number, because the mean of its divisors is an integer number (17685423000).

Almost surely, 2^202020001220 is an apocalyptic number.

202020001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020001220 is an abundant number, since it is smaller than the sum of its proper divisors (222430150780).

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

202020001220 is a wasteful number, since it uses less digits than its factorization.

202020001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955947 (or 4955945 counting only the distinct ones).

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

Adding to 202020001220 its reverse (22100020202), we get a palindrome (224120021422).

The spelling of 202020001220 in words is "two hundred two billion, twenty million, one thousand, two hundred twenty".