12643227241 has 2 divisors, whose sum is σ = 12643227242. Its totient is φ = 12643227240.

The previous prime is 12643227217. The next prime is 12643227257. The reversal of 12643227241 is 14272234621.

12643227241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8063321616 + 4579905625 = 89796^2 + 67675^2 .

It is a cyclic number.

It is not a de Polignac number, because 12643227241 - 2³¹ = 10495743593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12643227197 and 12643227206.

It is not a weakly prime, because it can be changed into another prime (12643227211) 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, 6321613620 + 6321613621.

It is an arithmetic number, because the mean of its divisors is an integer number (6321613621).

Almost surely, 2^12643227241 is an apocalyptic number.

It is an amenable number.

12643227241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643227241 is an equidigital number, since it uses as much as digits as its factorization.

12643227241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The spelling of 12643227241 in words is "twelve billion, six hundred forty-three million, two hundred twenty-seven thousand, two hundred forty-one".