2100100112 has 20 divisors (see below), whose sum is σ = 4438848336. Its totient is φ = 954590880.

The previous prime is 2100100109. The next prime is 2100100127. The reversal of 2100100112 is 2110010012.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2100100112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5966018 + ... + 5966369.

Almost surely, 2^2100100112 is an apocalyptic number.

2100100112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2100100112 is an abundant number, since it is smaller than the sum of its proper divisors (2338748224).

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

2100100112 is a wasteful number, since it uses less digits than its factorization.

2100100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11932406 (or 11932400 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2100100112 is about 45826.8492480118. The cubic root of 2100100112 is about 1280.5995140834.

Adding to 2100100112 its reverse (2110010012), we get a palindrome (4210110124).

The spelling of 2100100112 in words is "two billion, one hundred million, one hundred thousand, one hundred twelve".