11 groups of order 4221.
| SmallGroups | group |
|---|---|
| (4221, 1) | C7×C9×C67 #16862448 |
| (4221, 2) | C7⋊C9×C67 #16862449 |
| (4221, 3) | C7×C67⋊C9 #16862450 |
| (4221, 4) | #16862451 |
| (4221, 5) | #16862452 |
| (4221, 6) | C32×C7×C67 #16862453 |
| (4221, 7) | ΓL(1,𝔽8)×C67⋊C3 #16862454 |
| (4221, 8) | C3×#13064104 #16862455 |
| (4221, 9) | C3×#13064105 #16862456 |
| (4221, 10) | C3×ΓL(1,𝔽8)×C67 #16862457 |
| (4221, 11) | C3×C7×C67⋊C3 #16862458 |