11321322191 has 2 divisors, whose sum is σ = 11321322192. Its totient is φ = 11321322190.

The previous prime is 11321322157. The next prime is 11321322241. The reversal of 11321322191 is 19122312311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11321322191 - 2³⁰ = 10247580367 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 11321322191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321322101) 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, 5660661095 + 5660661096.

It is an arithmetic number, because the mean of its divisors is an integer number (5660661096).

Almost surely, 2^11321322191 is an apocalyptic number.

11321322191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321322191 is an equidigital number, since it uses as much as digits as its factorization.

11321322191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 26.

The spelling of 11321322191 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-two thousand, one hundred ninety-one".