2111120123 has 16 divisors (see below), whose sum is σ = 2462469120. Its totient is φ = 1772433600.

The previous prime is 2111120083. The next prime is 2111120149. The reversal of 2111120123 is 3210211112.

It is not a de Polignac number, because 2111120123 - 2⁸ = 2111119867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111120098 and 2111120107.

It is not an unprimeable number, because it can be changed into a prime (2111120173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106958 + ... + 125148.

It is an arithmetic number, because the mean of its divisors is an integer number (153904320).

Almost surely, 2^2111120123 is an apocalyptic number.

2111120123 is a deficient number, since it is larger than the sum of its proper divisors (351348997).

2111120123 is a wasteful number, since it uses less digits than its factorization.

2111120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18538.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2111120123 is about 45946.9272421998. The cubic root of 2111120123 is about 1282.8355358054.

Adding to 2111120123 its reverse (3210211112), we get a palindrome (5321331235).

The spelling of 2111120123 in words is "two billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-three".