12231082009 has 2 divisors, whose sum is σ = 12231082010. Its totient is φ = 12231082008.

The previous prime is 12231081991. The next prime is 12231082043. The reversal of 12231082009 is 90028013221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12093840784 + 137241225 = 109972^2 + 11715^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231082009 - 2⁵ = 12231081977 is a prime.

It is a super-2 number, since 2×12231082009² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12231082099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115541004 + 6115541005.

It is an arithmetic number, because the mean of its divisors is an integer number (6115541005).

Almost surely, 2^12231082009 is an apocalyptic number.

It is an amenable number.

12231082009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231082009 is an equidigital number, since it uses as much as digits as its factorization.

12231082009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 12231082009 in words is "twelve billion, two hundred thirty-one million, eighty-two thousand, nine".