We need info about your car. Do you have fabric or leather seats? Do you have led head lights? Do you have sun/solar roof? Fog lights? 8 speakers for the radio? Bluetooth and xm radio? I can tell you if it is a 2011 it would be a two, three, four or five, not a II, III, IV or V because 2010 is the only year that used uppercase Roman numerals for model designation.
welcome to priuschat! log on to the toyota owners website and plug in your vehicle identification number.
OP, ask your insurance agent/company. They know what it is from the VIN number. That's how they set their rates.