202020120100 has 36 divisors (see below), whose sum is σ = 461456489200. Its totient is φ = 76554992160.

The previous prime is 202020120097. The next prime is 202020120103. The reversal of 202020120100 is 1021020202.

It is an interprime number because it is at equal distance from previous prime (202020120097) and next prime (202020120103).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (202020120103) 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 11 ways as a sum of consecutive naturals, for example, 53161290 + ... + 53165089.

Almost surely, 2^202020120100 is an apocalyptic number.

202020120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020120100 is an abundant number, since it is smaller than the sum of its proper divisors (259436369100).

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

202020120100 is a wasteful number, since it uses less digits than its factorization.

202020120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106326412 (or 106326405 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202020120100 its reverse (1021020202), we get a palindrome (203041140302).

The spelling of 202020120100 in words is "two hundred two billion, twenty million, one hundred twenty thousand, one hundred".