111052161 has 32 divisors (see below), whose sum is σ = 180633600. Its totient is φ = 66871440.

The previous prime is 111052157. The next prime is 111052163. The reversal of 111052161 is 161250111.

It is a happy number.

It is not a de Polignac number, because 111052161 - 2² = 111052157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111052163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48480 + ... + 50718.

It is an arithmetic number, because the mean of its divisors is an integer number (5644800).

Almost surely, 2^111052161 is an apocalyptic number.

111052161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111052161 is a deficient number, since it is larger than the sum of its proper divisors (69581439).

111052161 is a wasteful number, since it uses less digits than its factorization.

111052161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 111052161 is about 10538.1289136165. The cubic root of 111052161 is about 480.6648209563.

The spelling of 111052161 in words is "one hundred eleven million, fifty-two thousand, one hundred sixty-one".