12166124666 has 64 divisors (see below), whose sum is σ = 19824507648. Its totient is φ = 5585868288.

The previous prime is 12166124651. The next prime is 12166124671. The reversal of 12166124666 is 66642166121.

It is a super-2 number, since 2×12166124666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35060705 + ... + 35061051.

It is an arithmetic number, because the mean of its divisors is an integer number (309757932).

Almost surely, 2^12166124666 is an apocalyptic number.

12166124666 is a deficient number, since it is larger than the sum of its proper divisors (7658382982).

12166124666 is a wasteful number, since it uses less digits than its factorization.

12166124666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its digits is 124416, while the sum is 41.

The spelling of 12166124666 in words is "twelve billion, one hundred sixty-six million, one hundred twenty-four thousand, six hundred sixty-six".