22221120220171 has 2 divisors, whose sum is σ = 22221120220172. Its totient is φ = 22221120220170.

The previous prime is 22221120220147. The next prime is 22221120220241. The reversal of 22221120220171 is 17102202112222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22221120220171 - 2⁹ = 22221120219659 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221120220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110560110085 + 11110560110086.

It is an arithmetic number, because the mean of its divisors is an integer number (11110560110086).

Almost surely, 2^{22221120220171} is an apocalyptic number.

22221120220171 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221120220171 is an equidigital number, since it uses as much as digits as its factorization.

22221120220171 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 22221120220171 its reverse (17102202112222), we get a palindrome (39323322332393).

The spelling of 22221120220171 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty million, two hundred twenty thousand, one hundred seventy-one".