CREATE TABLE table_name_53 (total_area VARCHAR(255), code VARCHAR(255), density__per_km_2_land_ VARCHAR(255))
What is the total area for a code less than 1862 and a density (per km 2 land) of 21.6?
    
SQL: SELECT total_area FROM table_name_53 WHERE code < 1862 AND density__per_km_2_land_ = 21.6