Great rhombated pentacontatetrapeton

The great rhombated pentacontatetrapeton or gram, also called the cantitruncated 122 polytope, is a convex uniform polypeton. It consists of 54 great birhombated penteracts, 72 great birhombidodecatera, and 720 triangular duoprismatic prisms. 4 great birhombated penteracts, 1 great birhombidodecateron, and 1 triangular duoprismatic prism join at each vertex. As the name suggests, it is the cantitruncation of the pentacontatetrapeton.