202020020202100 has 72 divisors (see below), whose sum is σ = 448588788167520. Its totient is φ = 78926925598080.

The previous prime is 202020020202067. The next prime is 202020020202109. The reversal of 202020020202100 is 1202020020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202020020202109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193335846 + ... + 194377954.

It is an arithmetic number, because the mean of its divisors is an integer number (6230399835660).

Almost surely, 2^{202020020202100} is an apocalyptic number.

202020020202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020020202100 is an abundant number, since it is smaller than the sum of its proper divisors (246568767965420).

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

202020020202100 is a wasteful number, since it uses less digits than its factorization.

202020020202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087249 (or 1087242 counting only the distinct ones).

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

Adding to 202020020202100 its reverse (1202020020202), we get a palindrome (203222040222302).

The spelling of 202020020202100 in words is "two hundred two trillion, twenty billion, twenty million, two hundred two thousand, one hundred".