2112900 has 36 divisors (see below), whose sum is σ = 6114192. Its totient is φ = 563360.

The previous prime is 2112893. The next prime is 2112919. The reversal of 2112900 is 92112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112900.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3222 + ... + 3821.

2^2112900 is an apocalyptic number.

2112900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112900 is an abundant number, since it is smaller than the sum of its proper divisors (4001292).

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

2112900 is a wasteful number, since it uses less digits than its factorization.

2112900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2112900 is about 1453.5817830449. The cubic root of 2112900 is about 128.3195952386.

It can be divided in two parts, 21 and 12900, that added together give a palindrome (12921).

The spelling of 2112900 in words is "two million, one hundred twelve thousand, nine hundred".