12222201220171 has 2 divisors, whose sum is σ = 12222201220172. Its totient is φ = 12222201220170.

The previous prime is 12222201220079. The next prime is 12222201220223. The reversal of 12222201220171 is 17102210222221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12222201220171 - 2¹⁷ = 12222201089099 is a prime.

It is not a weakly prime, because it can be changed into another prime (12222201290171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111100610085 + 6111100610086.

It is an arithmetic number, because the mean of its divisors is an integer number (6111100610086).

Almost surely, 2^{12222201220171} is an apocalyptic number.

12222201220171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222201220171 is an equidigital number, since it uses as much as digits as its factorization.

12222201220171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 12222201220171 its reverse (17102210222221), we get a palindrome (29324411442392).

The spelling of 12222201220171 in words is "twelve trillion, two hundred twenty-two billion, two hundred one million, two hundred twenty thousand, one hundred seventy-one".