1310315112221 has 2 divisors, whose sum is σ = 1310315112222. Its totient is φ = 1310315112220.

The previous prime is 1310315112203. The next prime is 1310315112269. The reversal of 1310315112221 is 1222115130131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 955711536025 + 354603576196 = 977605^2 + 595486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310315112221 - 2¹⁰ = 1310315111197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310315132221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655157556110 + 655157556111.

It is an arithmetic number, because the mean of its divisors is an integer number (655157556111).

Almost surely, 2^{1310315112221} is an apocalyptic number.

It is an amenable number.

1310315112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310315112221 is an equidigital number, since it uses as much as digits as its factorization.

1310315112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 1310315112221 in words is "one trillion, three hundred ten billion, three hundred fifteen million, one hundred twelve thousand, two hundred twenty-one".