12180636722 has 4 divisors (see below), whose sum is σ = 18270955086. Its totient is φ = 6090318360.

The previous prime is 12180636691. The next prime is 12180636739. The reversal of 12180636722 is 22763608121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9352630681 + 2828006041 = 96709^2 + 53179^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3045159179 + ... + 3045159182.

Almost surely, 2^12180636722 is an apocalyptic number.

12180636722 is a deficient number, since it is larger than the sum of its proper divisors (6090318364).

12180636722 is an equidigital number, since it uses as much as digits as its factorization.

12180636722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090318363.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 12180636722 in words is "twelve billion, one hundred eighty million, six hundred thirty-six thousand, seven hundred twenty-two".