111122145 has 16 divisors (see below), whose sum is σ = 197550720. Its totient is φ = 59265072.

The previous prime is 111122117. The next prime is 111122159. The reversal of 111122145 is 541221111.

It is not a de Polignac number, because 111122145 - 2⁸ = 111121889 is a prime.

It is a super-2 number, since 2×111122145² = 24696262218802050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411429 + ... + 411698.

It is an arithmetic number, because the mean of its divisors is an integer number (12346920).

Almost surely, 2^111122145 is an apocalyptic number.

111122145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111122145 is a deficient number, since it is larger than the sum of its proper divisors (86428575).

111122145 is an equidigital number, since it uses as much as digits as its factorization.

111122145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823141 (or 823135 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 111122145 is about 10541.4489042067. The cubic root of 111122145 is about 480.7657698639.

Adding to 111122145 its reverse (541221111), we get a palindrome (652343256).

The spelling of 111122145 in words is "one hundred eleven million, one hundred twenty-two thousand, one hundred forty-five".