Divisor 12021

To determine if any number is divisible by 12021, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 3 and 4007 - then it is divisible by 12021.

The following tests must pass:

• Test if a number is divisible by 3
• The "Aijaz Mohammad Test" for Divisibility by 4007

Easy!