12101111171 has 2 divisors, whose sum is σ = 12101111172. Its totient is φ = 12101111170.

The previous prime is 12101111147. The next prime is 12101111203. The reversal of 12101111171 is 17111110121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12101111171 - 2⁶ = 12101111107 is a prime.

It is not a weakly prime, because it can be changed into another prime (12101111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050555585 + 6050555586.

It is an arithmetic number, because the mean of its divisors is an integer number (6050555586).

Almost surely, 2^12101111171 is an apocalyptic number.

12101111171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101111171 is an equidigital number, since it uses as much as digits as its factorization.

12101111171 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 17.

Adding to 12101111171 its reverse (17111110121), we get a palindrome (29212221292).

The spelling of 12101111171 in words is "twelve billion, one hundred one million, one hundred eleven thousand, one hundred seventy-one".