11121102191 has 2 divisors, whose sum is σ = 11121102192. Its totient is φ = 11121102190.

The previous prime is 11121102127. The next prime is 11121102193. The reversal of 11121102191 is 19120112111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11121102191 - 2⁶ = 11121102127 is a prime.

Together with 11121102193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121102193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560551095 + 5560551096.

It is an arithmetic number, because the mean of its divisors is an integer number (5560551096).

Almost surely, 2^11121102191 is an apocalyptic number.

11121102191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121102191 is an equidigital number, since it uses as much as digits as its factorization.

11121102191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 11121102191 in words is "eleven billion, one hundred twenty-one million, one hundred two thousand, one hundred ninety-one".