| genus c | 21, orientable |
| Schläfli formula c | {8,56} |
| V / F / E c | 2 / 14 / 56 |
| notes | |
| vertex, face multiplicity c | 56, 4 |
| 4, each with 28 edges | |
| rotational symmetry group | 112 elements. |
| full symmetry group | 224 elements. |
| its presentation c | < r, s, t | t2, (rs)2, (rt)2, (st)2, sr3sr‑1, r8, s7r2s7 > |
| C&D number c | R21.28 |
| The statistics marked c are from the published work of Professor Marston Conder. | |
Its Petrie dual is
List of regular maps in orientable genus 21.
| Orientable | |
| Non-orientable |