2111312100 has 36 divisors (see below), whose sum is σ = 6108730544. Its totient is φ = 563016480.

The previous prime is 2111312087. The next prime is 2111312153. The reversal of 2111312100 is 12131112.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 3518554 + ... + 3519153.

Almost surely, 2^2111312100 is an apocalyptic number.

2111312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111312100 is an abundant number, since it is smaller than the sum of its proper divisors (3997418444).

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

2111312100 is a wasteful number, since it uses less digits than its factorization.

2111312100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037724 (or 7037717 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2111312100 is about 45949.0163115599. The cubic root of 2111312100 is about 1282.8744199740.

Adding to 2111312100 its reverse (12131112), we get a palindrome (2123443212).

The spelling of 2111312100 in words is "two billion, one hundred eleven million, three hundred twelve thousand, one hundred".