12001111322309 has 2 divisors, whose sum is σ = 12001111322310. Its totient is φ = 12001111322308.

The previous prime is 12001111322273. The next prime is 12001111322311. The reversal of 12001111322309 is 90322311110021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10223814400900 + 1777296921409 = 3197470^2 + 1333153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001111322309 is a prime.

It is a Sophie Germain prime.

Together with 12001111322311, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001111322339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000555661154 + 6000555661155.

It is an arithmetic number, because the mean of its divisors is an integer number (6000555661155).

Almost surely, 2^{12001111322309} is an apocalyptic number.

It is an amenable number.

12001111322309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001111322309 is an equidigital number, since it uses as much as digits as its factorization.

12001111322309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 12001111322309 in words is "twelve trillion, one billion, one hundred eleven million, three hundred twenty-two thousand, three hundred nine".