2100200 has 24 divisors (see below), whose sum is σ = 4883430. Its totient is φ = 840000.

The previous prime is 2100193. The next prime is 2100221. The reversal of 2100200 is 20012.

It can be written as a sum of positive squares in 3 ways, for example, as 1350244 + 749956 = 1162^2 + 866^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5051 + ... + 5450.

2^2100200 is an apocalyptic number.

2100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100200 is an abundant number, since it is smaller than the sum of its proper divisors (2783230).

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

2100200 is a wasteful number, since it uses less digits than its factorization.

2100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10517 (or 10508 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 2100200 is about 1449.2066795319. The cubic root of 2100200 is about 128.0619817004.

Adding to 2100200 its reverse (20012), we get a palindrome (2120212).

The spelling of 2100200 in words is "two million, one hundred thousand, two hundred".