2112564123 has 12 divisors (see below), whose sum is σ = 3056467440. Its totient is φ = 1406074896.

The previous prime is 2112564121. The next prime is 2112564127. The reversal of 2112564123 is 3214652112.

2112564123 is a `hidden beast` number, since 2 + 1 + 12 + 5 + 641 + 2 + 3 = 666.

It is not a de Polignac number, because 2112564123 - 2¹ = 2112564121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2112564121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185943 + ... + 196976.

It is an arithmetic number, because the mean of its divisors is an integer number (254705620).

Almost surely, 2^2112564123 is an apocalyptic number.

2112564123 is a deficient number, since it is larger than the sum of its proper divisors (943903317).

2112564123 is a wasteful number, since it uses less digits than its factorization.

2112564123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383538 (or 383535 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2112564123 is about 45962.6383381111. The cubic root of 2112564123 is about 1283.1279543979.

The spelling of 2112564123 in words is "two billion, one hundred twelve million, five hundred sixty-four thousand, one hundred twenty-three".