12216845873 has 2 divisors, whose sum is σ = 12216845874. Its totient is φ = 12216845872.

The previous prime is 12216845867. The next prime is 12216845887. The reversal of 12216845873 is 37854861221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12113863969 + 102981904 = 110063^2 + 10148^2 .

It is a cyclic number.

It is not a de Polignac number, because 12216845873 - 2⁴ = 12216845857 is a prime.

It is not a weakly prime, because it can be changed into another prime (12216845833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108422936 + 6108422937.

It is an arithmetic number, because the mean of its divisors is an integer number (6108422937).

Almost surely, 2^12216845873 is an apocalyptic number.

It is an amenable number.

12216845873 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216845873 is an equidigital number, since it uses as much as digits as its factorization.

12216845873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 47.

The spelling of 12216845873 in words is "twelve billion, two hundred sixteen million, eight hundred forty-five thousand, eight hundred seventy-three".