Small diretrosnub snub prismatosnub pentishecatonicosipentishexacosichoron

The small diretrosnub snub prismatosnub pentishecatonicosipentishexacosichoron, or sadersospis phipix, is a nonconvex uniform polychoron that consists of 1200 icosahedra (some of which lie in the same hyperplanes, forming 600 snub disoctahedra), 4800 octahemioctahedra (forming 2400 compounds of two), 600 truncated icosahedra, 600 small rhombicosidodecahedra, 3600 pentagrammic prisms, and 3000 truncated tetrahedra (600 of which form 120 truncated chiricosahedra).

Two icosahedra (two compounds), eight octahemioctahedra (eight compounds), five truncated icosahedra, five small rhombicosidodecahedra, five pentagrammic prisms, and five truncated tetrahedra (one compound and four single) join at each vertex.

It can be obtained as the blend of 5 small dipentary hecatonicosidishexacosichora and 5 small dipentary tetrishecatonicosiprismatohexacosichora.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small diretrosnub disnub decahecatonicosadishexacosichoron.