12211100191 has 2 divisors, whose sum is σ = 12211100192. Its totient is φ = 12211100190.

The previous prime is 12211100179. The next prime is 12211100249. The reversal of 12211100191 is 19100111221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211100191 - 2³¹ = 10063616543 is a prime.

It is a super-2 number, since 2×12211100191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211100791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105550095 + 6105550096.

It is an arithmetic number, because the mean of its divisors is an integer number (6105550096).

Almost surely, 2^12211100191 is an apocalyptic number.

12211100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211100191 is an equidigital number, since it uses as much as digits as its factorization.

12211100191 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 19.

The spelling of 12211100191 in words is "twelve billion, two hundred eleven million, one hundred thousand, one hundred ninety-one".