Small rhombated icosiheptaheptacontadipeton

The small rhombated icosiheptaheptacontadipeton or sirjak, also called the cantellated 221 polytope, is a convex uniform polypeton. It consists of 27 small rhombated triacontaditera, 27 penteractitriacontaditera, 72 small rhombated hexatera, and 216 rectified pentachoric prisms. 3 small rhombated triacontaditera, 1 penteractitriacontaditeron, 2 small rhombated hexatera, and 2 rectified pentachoric prisms join at each vertex. As the name suggests, it is the cantellation of the icosiheptaheptacontadipeton.