1231322242999 has 2 divisors, whose sum is σ = 1231322243000. Its totient is φ = 1231322242998.

The previous prime is 1231322242991. The next prime is 1231322243027. The reversal of 1231322242999 is 9992422231321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231322242999 - 2³ = 1231322242991 is a prime.

It is a super-2 number, since 2×1231322242999² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231322242991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615661121499 + 615661121500.

It is an arithmetic number, because the mean of its divisors is an integer number (615661121500).

Almost surely, 2^{1231322242999} is an apocalyptic number.

1231322242999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231322242999 is an equidigital number, since it uses as much as digits as its factorization.

1231322242999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The spelling of 1231322242999 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-two million, two hundred forty-two thousand, nine hundred ninety-nine".