2100202200 has 72 divisors (see below), whose sum is σ = 7053185100. Its totient is φ = 560053440.

The previous prime is 2100202171. The next prime is 2100202211. The reversal of 2100202200 is 22020012.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 581590 + ... + 585189.

Almost surely, 2^2100202200 is an apocalyptic number.

2100202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100202200 is an abundant number, since it is smaller than the sum of its proper divisors (4952982900).

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

2100202200 is a wasteful number, since it uses less digits than its factorization.

2100202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166801 (or 1166789 counting only the distinct ones).

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

The square root of 2100202200 is about 45827.9630793253. The cubic root of 2100202200 is about 1280.6202641616.

Adding to 2100202200 its reverse (22020012), we get a palindrome (2122222212).

The spelling of 2100202200 in words is "two billion, one hundred million, two hundred two thousand, two hundred".