12017127666 has 8 divisors (see below), whose sum is σ = 24034255344. Its totient is φ = 4005709220.

The previous prime is 12017127641. The next prime is 12017127667. The reversal of 12017127666 is 66672171021.

It is a sphenic number, since it is the product of 3 distinct primes.

12017127666 is an admirable number.

It is a super-2 number, since 2×12017127666² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12017127667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001427300 + ... + 1001427311.

It is an arithmetic number, because the mean of its divisors is an integer number (3004281918).

Almost surely, 2^12017127666 is an apocalyptic number.

12017127666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12017127666 is a wasteful number, since it uses less digits than its factorization.

12017127666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002854616.

The product of its (nonzero) digits is 42336, while the sum is 39.

Adding to 12017127666 its reverse (66672171021), we get a palindrome (78689298687).

The spelling of 12017127666 in words is "twelve billion, seventeen million, one hundred twenty-seven thousand, six hundred sixty-six".