12131320001209 has 2 divisors, whose sum is σ = 12131320001210. Its totient is φ = 12131320001208.

The previous prime is 12131320001071. The next prime is 12131320001233. The reversal of 12131320001209 is 90210002313121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9600993511209 + 2530326490000 = 3098547^2 + 1590700^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131320001209 - 2¹⁵ = 12131319968441 is a prime.

It is a super-2 number, since 2×12131320001209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12131320001309) 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, 6065660000604 + 6065660000605.

It is an arithmetic number, because the mean of its divisors is an integer number (6065660000605).

Almost surely, 2^{12131320001209} is an apocalyptic number.

It is an amenable number.

12131320001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131320001209 is an equidigital number, since it uses as much as digits as its factorization.

12131320001209 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 25.

The spelling of 12131320001209 in words is "twelve trillion, one hundred thirty-one billion, three hundred twenty million, one thousand, two hundred nine".