there isn't a major original Hindi film titled released specifically in 2021 , you are likely looking for the 2022 Tamil-language blockbuster

Pros:

Final Note: If the query intended a different Mahaan from 2021 (perhaps a short film, a regional production, or an unreleased project), no credible information exists. The above report covers the only notable Hindi-dubbed Mahaan released in the 2021–2022 period.

Be aware:

Key Details:

• Pacing issues in the second half.
• Runtime could have been tighter.

Plot Summary: 50 Years of Rebellion

Spanning nearly five decades, Mahaan is the story of Gandhi Mahaan (played by Vikram), a man born into the strict Ideological Gandhian family. His father is a school teacher who preaches absolute sacrifice and poverty. The film opens with a brutal irony: the family worships Mahatma Gandhi, but the son is named Gandhi.

: Vikram (Gandhi Mahaan), Dhruv Vikram (Dadabhai "Dada" Naoroji), Bobby Simha (Sathyavaan), and Simran (Naachi). Mahaan (1983) - Hindi Classic

Directed by Karthik Subbaraj, this film stars real-life father and son Chiyaan Vikram Dhruv Vikram together for the first time. Production Context