12011122309 has 2 divisors, whose sum is σ = 12011122310. Its totient is φ = 12011122308.

The previous prime is 12011122219. The next prime is 12011122337. The reversal of 12011122309 is 90322111021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10832230084 + 1178892225 = 104078^2 + 34335^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011122309 - 2⁹ = 12011121797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011122309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011122609) 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, 6005561154 + 6005561155.

It is an arithmetic number, because the mean of its divisors is an integer number (6005561155).

Almost surely, 2^12011122309 is an apocalyptic number.

It is an amenable number.

12011122309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011122309 is an equidigital number, since it uses as much as digits as its factorization.

12011122309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 12011122309 in words is "twelve billion, eleven million, one hundred twenty-two thousand, three hundred nine".