12011102102171 has 2 divisors, whose sum is σ = 12011102102172. Its totient is φ = 12011102102170.

The previous prime is 12011102102161. The next prime is 12011102102179. The reversal of 12011102102171 is 17120120111021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011102102171 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011102102179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005551051085 + 6005551051086.

It is an arithmetic number, because the mean of its divisors is an integer number (6005551051086).

Almost surely, 2^{12011102102171} is an apocalyptic number.

12011102102171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011102102171 is an equidigital number, since it uses as much as digits as its factorization.

12011102102171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 12011102102171 its reverse (17120120111021), we get a palindrome (29131222213192).

The spelling of 12011102102171 in words is "twelve trillion, eleven billion, one hundred two million, one hundred two thousand, one hundred seventy-one".