12233509 has 2 divisors, whose sum is σ = 12233510. Its totient is φ = 12233508.

The previous prime is 12233491. The next prime is 12233519. The reversal of 12233509 is 90533221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11189025 + 1044484 = 3345^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 12233509 - 2⁵ = 12233477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12233519) 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, 6116754 + 6116755.

It is an arithmetic number, because the mean of its divisors is an integer number (6116755).

Almost surely, 2^12233509 is an apocalyptic number.

It is an amenable number.

12233509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12233509 is an equidigital number, since it uses as much as digits as its factorization.

12233509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 12233509 is about 3497.6433494569. The cubic root of 12233509 is about 230.4183250137.

The spelling of 12233509 in words is "twelve million, two hundred thirty-three thousand, five hundred nine".