12073203209 has 2 divisors, whose sum is σ = 12073203210. Its totient is φ = 12073203208.

The previous prime is 12073203169. The next prime is 12073203223. The reversal of 12073203209 is 90230237021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8204736400 + 3868466809 = 90580^2 + 62197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12073203209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12073203409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6036601604 + 6036601605.

It is an arithmetic number, because the mean of its divisors is an integer number (6036601605).

Almost surely, 2^12073203209 is an apocalyptic number.

It is an amenable number.

12073203209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12073203209 is an equidigital number, since it uses as much as digits as its factorization.

12073203209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The spelling of 12073203209 in words is "twelve billion, seventy-three million, two hundred three thousand, two hundred nine".