Values of inductance - what is the "base" value?
That looks like a 220 &micro;H inductor.  These size inductors (like a lot of electronic parts) are labeled with something a lot like a floating point format in a computer.  The first N-1 digits are the mantissa and the last digit is the exponent of 10 to apply to the integer mantissa value.  In this case, the mantissa is 22 and the exponent 1.  The value is therefore 22 x 10^1 = 220.  The fact that the units are &micro;H is obvious from the general size and windings.  Some very small inductors are labeled like this in nH, but this one is obviously a lot bigger than 220 nH.