11312021199959 has 2 divisors, whose sum is σ = 11312021199960. Its totient is φ = 11312021199958.

The previous prime is 11312021199931. The next prime is 11312021199991. The reversal of 11312021199959 is 95999112021311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11312021199959 - 2¹² = 11312021195863 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11312021199959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11312021139959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656010599979 + 5656010599980.

It is an arithmetic number, because the mean of its divisors is an integer number (5656010599980).

Almost surely, 2^{11312021199959} is an apocalyptic number.

11312021199959 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312021199959 is an equidigital number, since it uses as much as digits as its factorization.

11312021199959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 53.

The spelling of 11312021199959 in words is "eleven trillion, three hundred twelve billion, twenty-one million, one hundred ninety-nine thousand, nine hundred fifty-nine".