2111135666 has 16 divisors (see below), whose sum is σ = 3191983200. Its totient is φ = 1047169728.

The previous prime is 2111135617. The next prime is 2111135669. The reversal of 2111135666 is 6665311112.

It is not an unprimeable number, because it can be changed into a prime (2111135669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148205 + ... + 161823.

It is an arithmetic number, because the mean of its divisors is an integer number (199498950).

Almost surely, 2^2111135666 is an apocalyptic number.

2111135666 is a deficient number, since it is larger than the sum of its proper divisors (1080847534).

2111135666 is a wasteful number, since it uses less digits than its factorization.

2111135666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14233.

The product of its digits is 6480, while the sum is 32.

The square root of 2111135666 is about 45947.0963826878. The cubic root of 2111135666 is about 1282.8386840651.

Adding to 2111135666 its reverse (6665311112), we get a palindrome (8776446778).

The spelling of 2111135666 in words is "two billion, one hundred eleven million, one hundred thirty-five thousand, six hundred sixty-six".