He won silver medals in the men's and mixed 4 × 400 m relays at the 2018 Asian Games and placed third in the individual 400 m in 2014.

[2] He competed in the 2020 Tokyo Olympics in the Men's 4 × 400 m relay event where the Indian team broke the Asian and National Records and clocked a time of 3:00.25.

He studied at the Government Boys Higher Secondary School, Lalgudi, and St. Joseph's College, Tiruchirappalli.

[5] Enrolled into the 8th Battalion of the Madras Regiment of Indian Army on March 15, 2011, Subedar Arokia Rajiv was honoured by the President of India Ram Nath Kovind in New Delhi with the prestigious Arjuna Award for his outstanding contribution in Athletics in 2017.

Subedar Arokia Rajiv becomes the second Arjuna Awardee from the Madras Regiment after Havildar Peter Thangaraj who had received the Award for his outstanding achievements as India's football goalkeeper.