2123133112 has 32 divisors (see below), whose sum is σ = 4303659600. Its totient is φ = 978511104.

The previous prime is 2123133109. The next prime is 2123133139. The reversal of 2123133112 is 2113313212.

It is a super-2 number, since 2×2123133112² = 9015388422541609088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 2123133112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183133 + ... + 194380.

Almost surely, 2^2123133112 is an apocalyptic number.

It is an amenable number.

2123133112 is an abundant number, since it is smaller than the sum of its proper divisors (2180526488).

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

2123133112 is a wasteful number, since it uses less digits than its factorization.

2123133112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377575 (or 377571 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 2123133112 is about 46077.4685936630. The cubic root of 2123133112 is about 1285.2641913153.

Adding to 2123133112 its reverse (2113313212), we get a palindrome (4236446324).

The spelling of 2123133112 in words is "two billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred twelve".