No problem, for others reference, you can only rearrange 1212 to the palindromes 1221 or 2112. Other katas of this series test for palindromes included in the number, not this one.

The second one falls under this condition:

For this kata, single digit numbers will NOT be considered numerical palindromes.

Did you try using console.log(num) ? 55 warriors have solved the kata in js so I don't think it's a kata issue.

Probably this:

If there is an even number of observations, then there is no single middle value; the median is then defined to be the mean of the two middle values (the median of {3, 5, 6, 9} is (5 + 6) / 2 = 5.5).

Unfortunately for you there are no errors in the tests. You don't say which is your language, I suppose it is Java. Look at the top of the page to see how many guys passed the Java kata. Please don't post an issue unless you are sure of your code.