Small prismatohecatonicosihecatonicosihexacosichoron

The small prismatohecatonicosihecatonicosihexacosichoron, or sphihix, is a nonconvex uniform polychoron that consists of 720 pentagrammic prisms, 600 truncated octahedra, 120 truncated icosahedra, and 120 icosidodecadodecahedra. 1 pentagrammic prism, 1 truncated icosahedron, 1 icosidodecadodecahedron, and 2 truncated octahedra join at each vertex.

It is in the same regiment as the prismatorhombated stellated hecatonicosachoron.