2120112345 has 32 divisors (see below), whose sum is σ = 3688618752. Its totient is φ = 1033604352.

The previous prime is 2120112317. The next prime is 2120112353. The reversal of 2120112345 is 5432110212.

It is not a de Polignac number, because 2120112345 - 2⁷ = 2120112217 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 32694 + ... + 72863.

It is an arithmetic number, because the mean of its divisors is an integer number (115269336).

Almost surely, 2^2120112345 is an apocalyptic number.

It is an amenable number.

2120112345 is a deficient number, since it is larger than the sum of its proper divisors (1568506407).

2120112345 is a wasteful number, since it uses less digits than its factorization.

2120112345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105681.

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

The square root of 2120112345 is about 46044.6777054634. The cubic root of 2120112345 is about 1284.6543494411.

Adding to 2120112345 its reverse (5432110212), we get a palindrome (7552222557).

The spelling of 2120112345 in words is "two billion, one hundred twenty million, one hundred twelve thousand, three hundred forty-five".