2113112123 has 4 divisors (see below), whose sum is σ = 2113204608. Its totient is φ = 2113019640.

The previous prime is 2113112101. The next prime is 2113112159. The reversal of 2113112123 is 3212113112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2113112123 - 2¹² = 2113108027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113112723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15590 + ... + 66852.

It is an arithmetic number, because the mean of its divisors is an integer number (528301152).

Almost surely, 2^2113112123 is an apocalyptic number.

2113112123 is a deficient number, since it is larger than the sum of its proper divisors (92485).

2113112123 is an equidigital number, since it uses as much as digits as its factorization.

2113112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92484.

The product of its digits is 72, while the sum is 17.

The square root of 2113112123 is about 45968.5993151847. The cubic root of 2113112123 is about 1283.2388927786.

Adding to 2113112123 its reverse (3212113112), we get a palindrome (5325225235).

The spelling of 2113112123 in words is "two billion, one hundred thirteen million, one hundred twelve thousand, one hundred twenty-three".