2112400345 has 16 divisors (see below), whose sum is σ = 2766234240. Its totient is φ = 1535785600.

The previous prime is 2112400333. The next prime is 2112400363. The reversal of 2112400345 is 5430042112.

2112400345 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2112400345 - 2²⁵ = 2078845913 is a prime.

It is a super-2 number, since 2×2112400345² = 8924470435112238050, which contains 22 as substring.

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, 275676 + ... + 283234.

It is an arithmetic number, because the mean of its divisors is an integer number (172889640).

Almost surely, 2^2112400345 is an apocalyptic number.

It is an amenable number.

2112400345 is a deficient number, since it is larger than the sum of its proper divisors (653833895).

2112400345 is a wasteful number, since it uses less digits than its factorization.

2112400345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12656.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2112400345 is about 45960.8566608587. The cubic root of 2112400345 is about 1283.0947950792.

Adding to 2112400345 its reverse (5430042112), we get a palindrome (7542442457).

The spelling of 2112400345 in words is "two billion, one hundred twelve million, four hundred thousand, three hundred forty-five".