He mentions his name at three places only as “Aryabhata”, towards the beginning and ending Verses of his work Aryabha?ya,
He gives a clue to his date of birth in his Aryabhatiya... The date works out to the end of the Kali year 3600, corresponding to the Saka year 421, the date being 21 March 499 ...and that he composed the Aryabha?ya when he was 25 years old, i.e. in Saka 444 or AD 522. Page 4
The second reason adduced, viz., that Aryabhata should have hailed from Kerala is fragile. Besides the Aryabhatan system being prevalent in this land,-“all” commentaries on Aryabha?ya have been produced by Kerala astronomers really does not stand scrutiny.