Step 1: Divide the number into separate digits:
24412 => 2 4 4 1 2
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
2 to 4 = 2
4 to 4 = 0
4 to 1 = 3
1 to 2 = 1
2 to 2 = 0
Step 3: Combine the filters to a string:
2 0 3 1 0 = 20310