2112312133 has 4 divisors (see below), whose sum is σ = 2128944640. Its totient is φ = 2095679628.

The previous prime is 2112312109. The next prime is 2112312143. The reversal of 2112312133 is 3312132112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112312133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112312133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112312143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8316063 + ... + 8316316.

It is an arithmetic number, because the mean of its divisors is an integer number (532236160).

Almost surely, 2^2112312133 is an apocalyptic number.

It is an amenable number.

2112312133 is a deficient number, since it is larger than the sum of its proper divisors (16632507).

2112312133 is a wasteful number, since it uses less digits than its factorization.

2112312133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16632506.

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

The square root of 2112312133 is about 45959.8970081527. The cubic root of 2112312133 is about 1283.0769345233.

Adding to 2112312133 its reverse (3312132112), we get a palindrome (5424444245).

The spelling of 2112312133 in words is "two billion, one hundred twelve million, three hundred twelve thousand, one hundred thirty-three".