Final answer:
The Airbus A321T usually has 2 to 4 lavatories.
Step-by-step explanation:
The Airbus A321T is a variant of the A321 aircraft. It is a single-aisle, twin-engine jet airliner that is primarily used for long-haul flights. The lavatory configuration on the A321T can vary depending on the airline, but commonly there are usually between 2 to 4 lavatories on this aircraft.