12101311309 has 2 divisors, whose sum is σ = 12101311310. Its totient is φ = 12101311308.

The previous prime is 12101311301. The next prime is 12101311361. The reversal of 12101311309 is 90311310121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11007157225 + 1094154084 = 104915^2 + 33078^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101311309 - 2³ = 12101311301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12101311309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101311301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050655654 + 6050655655.

It is an arithmetic number, because the mean of its divisors is an integer number (6050655655).

Almost surely, 2^12101311309 is an apocalyptic number.

It is an amenable number.

12101311309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101311309 is an equidigital number, since it uses as much as digits as its factorization.

12101311309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 12101311309 in words is "twelve billion, one hundred one million, three hundred eleven thousand, three hundred nine".