Pentagrammal antiprismatoverted hexacosihecatonicosachoron

The pentagrammal antiprismatoverted hexacosihecatonicosachoron, or papvixhi, is a nonconvex uniform polychoron that consists of 120 great icosahedra and 600 truncated tetrahedra. 2 great icosahedra and 10 truncated tetrahedra join at each vertex.

It is in the same regiment as the rectified great hecatonicosachoron.