111110112111123 has 8 divisors (see below), whose sum is σ = 164607573498000. Its totient is φ = 74073408074064.

The previous prime is 111110112111107. The next prime is 111110112111127. The reversal of 111110112111123 is 321111211011111.

It is a happy number.

It is not a de Polignac number, because 111110112111123 - 2⁴ = 111110112111107 is a prime.

It is a super-2 number, since 2×111110112111123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111110112111096 and 111110112111105.

It is not an unprimeable number, because it can be changed into a prime (111110112111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057594668698 + ... + 2057594668751.

It is an arithmetic number, because the mean of its divisors is an integer number (20575946687250).

Almost surely, 2^{111110112111123} is an apocalyptic number.

111110112111123 is a deficient number, since it is larger than the sum of its proper divisors (53497461386877).

111110112111123 is an equidigital number, since it uses as much as digits as its factorization.

111110112111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115189337458 (or 4115189337452 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 18.

Adding to 111110112111123 its reverse (321111211011111), we get a palindrome (432221323122234).

The spelling of 111110112111123 in words is "one hundred eleven trillion, one hundred ten billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-three".