12666111022 has 8 divisors (see below), whose sum is σ = 19049297400. Its totient is φ = 6316345224.

The previous prime is 12666110993. The next prime is 12666111023. The reversal of 12666111022 is 22011166621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666111023) 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, 8354197 + ... + 8355712.

It is an arithmetic number, because the mean of its divisors is an integer number (2381162175).

Almost surely, 2^12666111022 is an apocalyptic number.

12666111022 is a deficient number, since it is larger than the sum of its proper divisors (6383186378).

12666111022 is a wasteful number, since it uses less digits than its factorization.

12666111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16710290.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 12666111022 its reverse (22011166621), we get a palindrome (34677277643).

The spelling of 12666111022 in words is "twelve billion, six hundred sixty-six million, one hundred eleven thousand, twenty-two".