1312210111099 has 2 divisors, whose sum is σ = 1312210111100. Its totient is φ = 1312210111098.

The previous prime is 1312210111031. The next prime is 1312210111103. The reversal of 1312210111099 is 9901110122131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312210111099 - 2¹⁷ = 1312209980027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312210111099.

It is not a weakly prime, because it can be changed into another prime (1312210112099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656105055549 + 656105055550.

It is an arithmetic number, because the mean of its divisors is an integer number (656105055550).

Almost surely, 2^{1312210111099} is an apocalyptic number.

1312210111099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312210111099 is an equidigital number, since it uses as much as digits as its factorization.

1312210111099 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 31.

The spelling of 1312210111099 in words is "one trillion, three hundred twelve billion, two hundred ten million, one hundred eleven thousand, ninety-nine".