2112312045 has 16 divisors (see below), whose sum is σ = 3381181632. Its totient is φ = 1126072320.

The previous prime is 2112312031. The next prime is 2112312071. The reversal of 2112312045 is 5402132112.

It is not a de Polignac number, because 2112312045 - 2⁴ = 2112312029 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5869 + ... + 65261.

It is an arithmetic number, because the mean of its divisors is an integer number (211323852).

Almost surely, 2^2112312045 is an apocalyptic number.

It is an amenable number.

2112312045 is a deficient number, since it is larger than the sum of its proper divisors (1268869587).

2112312045 is a wasteful number, since it uses less digits than its factorization.

2112312045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61772.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2112312045 is about 45959.8960507963. The cubic root of 2112312045 is about 1283.0769167054.

Adding to 2112312045 its reverse (5402132112), we get a palindrome (7514444157).

The spelling of 2112312045 in words is "two billion, one hundred twelve million, three hundred twelve thousand, forty-five".