73 is the 21st prime number, its mirror 37 is the 12th, and its mirror 21 is the product of multiplying (hang on to your hats) 7 and 3. In binary 73 is a palindrome 1001001, which backwards is 1001001, exactly the same. HUH???
Palindrome Pencils— here
Blessed Serendipity: Eleven Eleven Eleven
Stressed is Desserts Tile Coaster
Redneck Palindrome -