220200121210100 has 72 divisors (see below), whose sum is σ = 490759099016760. Its totient is φ = 85697691102720.

The previous prime is 220200121210093. The next prime is 220200121210189. The reversal of 220200121210100 is 1012121002022.

It can be written as a sum of positive squares in 12 ways, for example, as 7308793296484 + 212891327913616 = 2703478^2 + 14590796^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181127066 + ... + 182338734.

It is an arithmetic number, because the mean of its divisors is an integer number (6816098597455).

Almost surely, 2^{220200121210100} is an apocalyptic number.

220200121210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220200121210100 is an abundant number, since it is smaller than the sum of its proper divisors (270558977806660).

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

220200121210100 is a wasteful number, since it uses less digits than its factorization.

220200121210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260837 (or 1260830 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220200121210100 its reverse (1012121002022), we get a palindrome (221212242212122).

The spelling of 220200121210100 in words is "two hundred twenty trillion, two hundred billion, one hundred twenty-one million, two hundred ten thousand, one hundred".