12863144221 has 2 divisors, whose sum is σ = 12863144222. Its totient is φ = 12863144220.

The previous prime is 12863144219. The next prime is 12863144251. The reversal of 12863144221 is 12244136821.

12863144221 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., 10759912900 + 2103231321 = 103730^2 + 45861^2 .

It is a cyclic number.

It is not a de Polignac number, because 12863144221 - 2¹ = 12863144219 is a prime.

Together with 12863144219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12863144251) 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, 6431572110 + 6431572111.

It is an arithmetic number, because the mean of its divisors is an integer number (6431572111).

Almost surely, 2^12863144221 is an apocalyptic number.

It is an amenable number.

12863144221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12863144221 is an equidigital number, since it uses as much as digits as its factorization.

12863144221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The spelling of 12863144221 in words is "twelve billion, eight hundred sixty-three million, one hundred forty-four thousand, two hundred twenty-one".