111115145 has 32 divisors (see below), whose sum is σ = 145411200. Its totient is φ = 81202176.

The previous prime is 111115141. The next prime is 111115177. The reversal of 111115145 is 541511111.

It is a cyclic number.

It is not a de Polignac number, because 111115145 - 2² = 111115141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111115141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620666 + ... + 620844.

It is an arithmetic number, because the mean of its divisors is an integer number (4544100).

Almost surely, 2^111115145 is an apocalyptic number.

It is an amenable number.

111115145 is a deficient number, since it is larger than the sum of its proper divisors (34296055).

111115145 is a wasteful number, since it uses less digits than its factorization.

111115145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its digits is 100, while the sum is 20.

The square root of 111115145 is about 10541.1168763087. The cubic root of 111115145 is about 480.7556745732.

Adding to 111115145 its reverse (541511111), we get a palindrome (652626256).

The spelling of 111115145 in words is "one hundred eleven million, one hundred fifteen thousand, one hundred forty-five".