111102057 has 32 divisors (see below), whose sum is σ = 181762560. Its totient is φ = 66508560.

The previous prime is 111102053. The next prime is 111102091. The reversal of 111102057 is 750201111.

It is a happy number.

It is not a de Polignac number, because 111102057 - 2² = 111102053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111102053) 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, 22398 + ... + 26904.

It is an arithmetic number, because the mean of its divisors is an integer number (5680080).

Almost surely, 2^111102057 is an apocalyptic number.

It is an amenable number.

111102057 is a deficient number, since it is larger than the sum of its proper divisors (70660503).

111102057 is a wasteful number, since it uses less digits than its factorization.

111102057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610 (or 4604 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 111102057 is about 10540.4960509456. The cubic root of 111102057 is about 480.7367981266.

Adding to 111102057 its reverse (750201111), we get a palindrome (861303168).

The spelling of 111102057 in words is "one hundred eleven million, one hundred two thousand, fifty-seven".