1310021099 has 2 divisors, whose sum is σ = 1310021100. Its totient is φ = 1310021098.

The previous prime is 1310021093. The next prime is 1310021107. The reversal of 1310021099 is 9901200131.

It is a weak prime.

It is an emirp because it is prime and its reverse (9901200131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1310021099 - 2²⁰ = 1308972523 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1310021093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655010549 + 655010550.

It is an arithmetic number, because the mean of its divisors is an integer number (655010550).

Almost surely, 2^1310021099 is an apocalyptic number.

1310021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310021099 is an equidigital number, since it uses as much as digits as its factorization.

1310021099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1310021099 is about 36194.2136121231. The cubic root of 1310021099 is about 1094.1900556811.

The spelling of 1310021099 in words is "one billion, three hundred ten million, twenty-one thousand, ninety-nine".