12223611666 has 40 divisors (see below), whose sum is σ = 31302796800. Its totient is φ = 3492460152.

The previous prime is 12223611649. The next prime is 12223611667. The reversal of 12223611666 is 66611632221.

It is a super-2 number, since 2×12223611666² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12223611666.

It is not an unprimeable number, because it can be changed into a prime (12223611667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5388466 + ... + 5390733.

It is an arithmetic number, because the mean of its divisors is an integer number (782569920).

Almost surely, 2^12223611666 is an apocalyptic number.

12223611666 is an abundant number, since it is smaller than the sum of its proper divisors (19079185134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12223611666 is a wasteful number, since it uses less digits than its factorization.

12223611666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779220 (or 10779211 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The spelling of 12223611666 in words is "twelve billion, two hundred twenty-three million, six hundred eleven thousand, six hundred sixty-six".