12131201099 has 2 divisors, whose sum is σ = 12131201100. Its totient is φ = 12131201098.

The previous prime is 12131201083. The next prime is 12131201143. The reversal of 12131201099 is 99010213121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12131201099 - 2⁴ = 12131201083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12131201009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065600549 + 6065600550.

It is an arithmetic number, because the mean of its divisors is an integer number (6065600550).

Almost surely, 2^12131201099 is an apocalyptic number.

12131201099 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131201099 is an equidigital number, since it uses as much as digits as its factorization.

12131201099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 12131201099 in words is "twelve billion, one hundred thirty-one million, two hundred one thousand, ninety-nine".