12244309991 has 2 divisors, whose sum is σ = 12244309992. Its totient is φ = 12244309990.

The previous prime is 12244309949. The next prime is 12244310047. The reversal of 12244309991 is 19990344221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12244309991 - 2⁶ = 12244309927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12244309591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6122154995 + 6122154996.

It is an arithmetic number, because the mean of its divisors is an integer number (6122154996).

Almost surely, 2^12244309991 is an apocalyptic number.

12244309991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12244309991 is an equidigital number, since it uses as much as digits as its factorization.

12244309991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 12244309991 in words is "twelve billion, two hundred forty-four million, three hundred nine thousand, nine hundred ninety-one".