2113022123 has 4 divisors (see below), whose sum is σ = 2237317560. Its totient is φ = 1988726688.

The previous prime is 2113022083. The next prime is 2113022137. The reversal of 2113022123 is 3212203112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113022123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 124295419 = 2113022123 / (2 + 1 + 1 + 3 + 0 + 2 + 2 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113022323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62147693 + ... + 62147726.

It is an arithmetic number, because the mean of its divisors is an integer number (559329390).

Almost surely, 2^2113022123 is an apocalyptic number.

2113022123 is a deficient number, since it is larger than the sum of its proper divisors (124295437).

2113022123 is a wasteful number, since it uses less digits than its factorization.

2113022123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124295436.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2113022123 is about 45967.6203756514. The cubic root of 2113022123 is about 1283.2206742880.

Adding to 2113022123 its reverse (3212203112), we get a palindrome (5325225235).

The spelling of 2113022123 in words is "two billion, one hundred thirteen million, twenty-two thousand, one hundred twenty-three".