191119211111 has 2 divisors, whose sum is σ = 191119211112. Its totient is φ = 191119211110.

The previous prime is 191119211053. The next prime is 191119211119. The reversal of 191119211111 is 111112911191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191119211111 - 2⁶ = 191119211047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191119211119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95559605555 + 95559605556.

It is an arithmetic number, because the mean of its divisors is an integer number (95559605556).

Almost surely, 2^191119211111 is an apocalyptic number.

191119211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

191119211111 is an equidigital number, since it uses as much as digits as its factorization.

191119211111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 29.

The spelling of 191119211111 in words is "one hundred ninety-one billion, one hundred nineteen million, two hundred eleven thousand, one hundred eleven".