2120123112 has 64 divisors (see below), whose sum is σ = 5383584000. Its totient is φ = 695675904.

The previous prime is 2120123107. The next prime is 2120123123. The reversal of 2120123112 is 2113210212.

It is a junction number, because it is equal to n+sod(n) for n = 2120123091 and 2120123100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508428 + ... + 512580.

It is an arithmetic number, because the mean of its divisors is an integer number (84118500).

Almost surely, 2^2120123112 is an apocalyptic number.

It is an amenable number.

2120123112 is an abundant number, since it is smaller than the sum of its proper divisors (3263460888).

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

2120123112 is a wasteful number, since it uses less digits than its factorization.

2120123112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490 (or 4486 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2120123112 is about 46044.7946243655. The cubic root of 2120123112 is about 1284.6565241451.

Adding to 2120123112 its reverse (2113210212), we get a palindrome (4233333324).

The spelling of 2120123112 in words is "two billion, one hundred twenty million, one hundred twenty-three thousand, one hundred twelve".