12168516722 has 8 divisors (see below), whose sum is σ = 18440948316. Its totient is φ = 6021533952.

The previous prime is 12168516677. The next prime is 12168516733. The reversal of 12168516722 is 22761586121.

12168516722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 110311²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 12168516721 + 1 = 110311^2 + 1^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12168516722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31361963 + ... + 31362350.

Almost surely, 2^12168516722 is an apocalyptic number.

12168516722 is a deficient number, since it is larger than the sum of its proper divisors (6272431594).

12168516722 is an equidigital number, since it uses as much as digits as its factorization.

12168516722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62724412.

The product of its digits is 80640, while the sum is 41.

The spelling of 12168516722 in words is "twelve billion, one hundred sixty-eight million, five hundred sixteen thousand, seven hundred twenty-two".