111125123 has 2 divisors, whose sum is σ = 111125124. Its totient is φ = 111125122.

The previous prime is 111125101. The next prime is 111125177. The reversal of 111125123 is 321521111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111125123 - 2¹⁰ = 111124099 is a prime.

It is a super-3 number, since 3×111125123³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111125423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55562561 + 55562562.

It is an arithmetic number, because the mean of its divisors is an integer number (55562562).

Almost surely, 2^111125123 is an apocalyptic number.

111125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111125123 is an equidigital number, since it uses as much as digits as its factorization.

111125123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 17.

The square root of 111125123 is about 10541.5901551901. The cubic root of 111125123 is about 480.7700645604.

Adding to 111125123 its reverse (321521111), we get a palindrome (432646234).

The spelling of 111125123 in words is "one hundred eleven million, one hundred twenty-five thousand, one hundred twenty-three".