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A fully systematic study of even and odd isotopes (281 $\leq$ A $\leq$ 380)of Z = 121 superheavy nuclei is presented in theoretical frameworks ofRelativistic mean-field plus state dependent BCS approach andMacroscopic-Microscopic approach with triaxially deformed Nilson Strutinskyprescription. The ground state properties namely shell correction, bindingenergy, two- and one- proton and neutron separation energy, shape, deformation,density profile and the radius are estimated that show strong evidence formagicity in N = 164, 228. Central depletion in the charge density due to largerepulsive Coulomb field indicating bubble-like structure is reported. Acomprehensive analysis of the possible decay modes specifically $\alpha$-decayand spontaneous fission (SF) is presented and the probable $\alpha$-decaychains are evaluated. Results are compared with FRDM calculations and theavailable experimental data which show excellent agreement.

Distinct ground state features and the decay chains of Z = 121 Superheavy Nuclei