2100202100 has 72 divisors (see below), whose sum is σ = 4897811520. Its totient is φ = 778821120.

The previous prime is 2100202057. The next prime is 2100202141. The reversal of 2100202100 is 12020012.

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 23 ways as a sum of consecutive naturals, for example, 104681 + ... + 123119.

It is an arithmetic number, because the mean of its divisors is an integer number (68025160).

Almost surely, 2^2100202100 is an apocalyptic number.

2100202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100202100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2448905760).

2100202100 is an abundant number, since it is smaller than the sum of its proper divisors (2797609420).

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

2100202100 is a wasteful number, since it uses less digits than its factorization.

2100202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537 (or 18530 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2100202100 is about 45827.9619882883. The cubic root of 2100202100 is about 1280.6202438363.

Adding to 2100202100 its reverse (12020012), we get a palindrome (2112222112).

The spelling of 2100202100 in words is "two billion, one hundred million, two hundred two thousand, one hundred".