• No random tests
• No describe/it blocks

As mentioned below, the description confused itself and provided incorrect conditions.

If the number is even and not pallindrome: [...] eg: number=123 then return 444

If that number is even and pallindrome: [...] eg if number =121 then return 14641

Maybe it would be better if the examples use even numbers.

test.assert_equals(numberr(37),110)

If the number is odd and not pallindrome :Then you have to return that number in a reverse order eg: number =123 then return 321

37 is an odd and non-palindromic number. Why does the test expect 110 instead of 73?