Great rhombated icosiheptaheptacontadipeton

The great rhombated icosiheptaheptacontadipeton or girjak, also called the cantitruncated 221 polytope, is a convex uniform polypeton. It consists of 27 great rhombated triacontaditera, 27 truncated demipenteracts, 72 great rhombated hexatera, and 216 rectified pentachoric prisms. 3 great rhombated triacontaditera, 1 truncated demipenteract, 2 great rhombated hexatera, and 1 rectified pentachoric prism join at each vertex. As the name suggests, it is the cantitruncation of the icosiheptaheptacontadipeton.