12111001171 has 2 divisors, whose sum is σ = 12111001172. Its totient is φ = 12111001170.

The previous prime is 12111001159. The next prime is 12111001181. The reversal of 12111001171 is 17110011121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111001171 - 2¹¹ = 12110999123 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111001181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055500585 + 6055500586.

It is an arithmetic number, because the mean of its divisors is an integer number (6055500586).

Almost surely, 2^12111001171 is an apocalyptic number.

12111001171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111001171 is an equidigital number, since it uses as much as digits as its factorization.

12111001171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 16.

Adding to 12111001171 its reverse (17110011121), we get a palindrome (29221012292).

The spelling of 12111001171 in words is "twelve billion, one hundred eleven million, one thousand, one hundred seventy-one".