12207808909 has 2 divisors, whose sum is σ = 12207808910. Its totient is φ = 12207808908.

The previous prime is 12207808889. The next prime is 12207808913. The reversal of 12207808909 is 90980870221.

12207808909 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., 7889347684 + 4318461225 = 88822^2 + 65715^2 .

It is a cyclic number.

It is not a de Polignac number, because 12207808909 - 2⁹ = 12207808397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12207808979) 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, 6103904454 + 6103904455.

It is an arithmetic number, because the mean of its divisors is an integer number (6103904455).

Almost surely, 2^12207808909 is an apocalyptic number.

It is an amenable number.

12207808909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12207808909 is an equidigital number, since it uses as much as digits as its factorization.

12207808909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 12207808909 in words is "twelve billion, two hundred seven million, eight hundred eight thousand, nine hundred nine".