11121320191 has 2 divisors, whose sum is σ = 11121320192. Its totient is φ = 11121320190.

The previous prime is 11121320167. The next prime is 11121320257. The reversal of 11121320191 is 19102312111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11121320191 - 2¹⁷ = 11121189119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121320101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560660095 + 5560660096.

It is an arithmetic number, because the mean of its divisors is an integer number (5560660096).

Almost surely, 2^11121320191 is an apocalyptic number.

11121320191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121320191 is an equidigital number, since it uses as much as digits as its factorization.

11121320191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 11121320191 in words is "eleven billion, one hundred twenty-one million, three hundred twenty thousand, one hundred ninety-one".