12244312309 has 2 divisors, whose sum is σ = 12244312310. Its totient is φ = 12244312308.

The previous prime is 12244312259. The next prime is 12244312319. The reversal of 12244312309 is 90321344221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11891248209 + 353064100 = 109047^2 + 18790^2 .

It is a cyclic number.

It is not a de Polignac number, because 12244312309 - 2²¹ = 12242215157 is a prime.

It is a super-2 number, since 2×12244312309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12244312319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6122156154 + 6122156155.

It is an arithmetic number, because the mean of its divisors is an integer number (6122156155).

Almost surely, 2^12244312309 is an apocalyptic number.

It is an amenable number.

12244312309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12244312309 is an equidigital number, since it uses as much as digits as its factorization.

12244312309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 12244312309 in words is "twelve billion, two hundred forty-four million, three hundred twelve thousand, three hundred nine".