2100220200 has 144 divisors (see below), whose sum is σ = 7595881020. Its totient is φ = 516971520.

The previous prime is 2100220163. The next prime is 2100220207. The reversal of 2100220200 is 20220012.

2100220200 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 699814116 + 1400406084 = 26454^2 + 37422^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2100220207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21477 + ... + 68276.

Almost surely, 2^2100220200 is an apocalyptic number.

2100220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100220200 is an abundant number, since it is smaller than the sum of its proper divisors (5495660820).

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

2100220200 is a wasteful number, since it uses less digits than its factorization.

2100220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89788 (or 89776 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2100220200 is about 45828.1594655513. The cubic root of 2100220200 is about 1280.6239227140.

Adding to 2100220200 its reverse (20220012), we get a palindrome (2120440212).

The spelling of 2100220200 in words is "two billion, one hundred million, two hundred twenty thousand, two hundred".