1091101922191 has 2 divisors, whose sum is σ = 1091101922192. Its totient is φ = 1091101922190.

The previous prime is 1091101922117. The next prime is 1091101922203. The reversal of 1091101922191 is 1912291011901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1091101922191 - 2⁷ = 1091101922063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1091101922191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091101922591) 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, 545550961095 + 545550961096.

It is an arithmetic number, because the mean of its divisors is an integer number (545550961096).

Almost surely, 2^{1091101922191} is an apocalyptic number.

1091101922191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091101922191 is an equidigital number, since it uses as much as digits as its factorization.

1091101922191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 1091101922191 in words is "one trillion, ninety-one billion, one hundred one million, nine hundred twenty-two thousand, one hundred ninety-one".