111149091 has 10 divisors (see below), whose sum is σ = 166037652. Its totient is φ = 74099340.

The previous prime is 111149081. The next prime is 111149113. The reversal of 111149091 is 190941111.

It is not a de Polignac number, because 111149091 - 2⁷ = 111148963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (111149081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 686025 + ... + 686186.

Almost surely, 2^111149091 is an apocalyptic number.

111149091 is a deficient number, since it is larger than the sum of its proper divisors (54888561).

111149091 is an equidigital number, since it uses as much as digits as its factorization.

111149091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372223 (or 1372214 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The square root of 111149091 is about 10542.7269242829. The cubic root of 111149091 is about 480.8046270075.

The spelling of 111149091 in words is "one hundred eleven million, one hundred forty-nine thousand, ninety-one".