111118666 has 12 divisors (see below), whose sum is σ = 168344082. Its totient is φ = 55009416.

The previous prime is 111118661. The next prime is 111118717. The reversal of 111118666 is 666811111.

It can be written as a sum of positive squares in only one way, i.e., 76650025 + 34468641 = 8755^2 + 5871^2 .

It is not an unprimeable number, because it can be changed into a prime (111118661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18600 + ... + 23836.

Almost surely, 2^111118666 is an apocalyptic number.

111118666 is a deficient number, since it is larger than the sum of its proper divisors (57225416).

111118666 is an equidigital number, since it uses as much as digits as its factorization.

111118666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445 (or 5342 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 111118666 is about 10541.2838876486. The cubic root of 111118666 is about 480.7607525574.

Adding to 111118666 its reverse (666811111), we get a palindrome (777929777).

The spelling of 111118666 in words is "one hundred eleven million, one hundred eighteen thousand, six hundred sixty-six".