202100102120220 has 96 divisors (see below), whose sum is σ = 584812176298560. Its totient is φ = 52113588387840.

The previous prime is 202100102120219. The next prime is 202100102120291. The reversal of 202100102120220 is 22021201001202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202100102120220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363237565 + ... + 363793524.

It is an arithmetic number, because the mean of its divisors is an integer number (6091793503110).

Almost surely, 2^{202100102120220} is an apocalyptic number.

202100102120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100102120220 is an abundant number, since it is smaller than the sum of its proper divisors (382712074178340).

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

202100102120220 is a wasteful number, since it uses less digits than its factorization.

202100102120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727031255 (or 727031253 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202100102120220 its reverse (22021201001202), we get a palindrome (224121303121422).

The spelling of 202100102120220 in words is "two hundred two trillion, one hundred billion, one hundred two million, one hundred twenty thousand, two hundred twenty".