12111111193 has 2 divisors, whose sum is σ = 12111111194. Its totient is φ = 12111111192.

The previous prime is 12111111149. The next prime is 12111111197. The reversal of 12111111193 is 39111111121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6637035024 + 5474076169 = 81468^2 + 73987^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111111193 - 2¹⁷ = 12110980121 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111111197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055555596 + 6055555597.

It is an arithmetic number, because the mean of its divisors is an integer number (6055555597).

Almost surely, 2^12111111193 is an apocalyptic number.

It is an amenable number.

12111111193 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111111193 is an equidigital number, since it uses as much as digits as its factorization.

12111111193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 22.

The spelling of 12111111193 in words is "twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred ninety-three".