12220012100171 has 2 divisors, whose sum is σ = 12220012100172. Its totient is φ = 12220012100170.

The previous prime is 12220012100057. The next prime is 12220012100189. The reversal of 12220012100171 is 17100121002221.

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-12220012100171 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220012100671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110006050085 + 6110006050086.

It is an arithmetic number, because the mean of its divisors is an integer number (6110006050086).

Almost surely, 2^{12220012100171} is an apocalyptic number.

12220012100171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220012100171 is an equidigital number, since it uses as much as digits as its factorization.

12220012100171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 12220012100171 its reverse (17100121002221), we get a palindrome (29320133102392).

The spelling of 12220012100171 in words is "twelve trillion, two hundred twenty billion, twelve million, one hundred thousand, one hundred seventy-one".