111123020113 has 12 divisors (see below), whose sum is σ = 131194894512. Its totient is φ = 93826683720.

The previous prime is 111123020027. The next prime is 111123020179. The reversal of 111123020113 is 311020321111.

It is a happy number.

It is not a de Polignac number, because 111123020113 - 2²¹ = 111120922961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123020713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16920723 + ... + 16927288.

It is an arithmetic number, because the mean of its divisors is an integer number (10932907876).

Almost surely, 2^111123020113 is an apocalyptic number.

It is an amenable number.

111123020113 is a deficient number, since it is larger than the sum of its proper divisors (20071874399).

111123020113 is an equidigital number, since it uses as much as digits as its factorization.

111123020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33848092 (or 33848085 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111123020113 its reverse (311020321111), we get a palindrome (422143341224).

The spelling of 111123020113 in words is "one hundred eleven billion, one hundred twenty-three million, twenty thousand, one hundred thirteen".