111144123 has 8 divisors (see below), whose sum is σ = 164658000. Its totient is φ = 74096064.

The previous prime is 111144101. The next prime is 111144151. The reversal of 111144123 is 321441111.

It is not a de Polignac number, because 111144123 - 2¹⁰ = 111143099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111144096 and 111144105.

It is not an unprimeable number, because it can be changed into a prime (111144193) 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 7 ways as a sum of consecutive naturals, for example, 2058198 + ... + 2058251.

It is an arithmetic number, because the mean of its divisors is an integer number (20582250).

Almost surely, 2^111144123 is an apocalyptic number.

111144123 is a deficient number, since it is larger than the sum of its proper divisors (53513877).

111144123 is an equidigital number, since it uses as much as digits as its factorization.

111144123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116458 (or 4116452 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 111144123 is about 10542.4913089838. The cubic root of 111144123 is about 480.7974634373.

Adding to 111144123 its reverse (321441111), we get a palindrome (432585234).

The spelling of 111144123 in words is "one hundred eleven million, one hundred forty-four thousand, one hundred twenty-three".