12116453221 has 2 divisors, whose sum is σ = 12116453222. Its totient is φ = 12116453220.

The previous prime is 12116453207. The next prime is 12116453263. The reversal of 12116453221 is 12235461121.

12116453221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12043965025 + 72488196 = 109745^2 + 8514^2 .

It is a cyclic number.

It is not a de Polignac number, because 12116453221 - 2⁷ = 12116453093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12116453221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12116453201) by changing a digit.

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 as a sum of consecutive naturals, namely, 6058226610 + 6058226611.

It is an arithmetic number, because the mean of its divisors is an integer number (6058226611).

Almost surely, 2^12116453221 is an apocalyptic number.

It is an amenable number.

12116453221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12116453221 is an equidigital number, since it uses as much as digits as its factorization.

12116453221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The spelling of 12116453221 in words is "twelve billion, one hundred sixteen million, four hundred fifty-three thousand, two hundred twenty-one".