No, he was not.
Hercules was immortal because he was one of the 12 Olympian gods.
It's not clear how long he was bound to the rock. If you base a guess on the time of Zeus to the time of Hercules. It would be 12 generations or 240 years.
Hercules went down o the underworlds as one of his 12 labours.
Hercules - 1998 Hercules and the Gorgon 2-12 was released on: USA: 9 January 1999
Hercules - 1998 Hercules and the Living Legend 1-12 was released on: USA: 15 September 1998
Hercules was an illegitimate son of Zeus so he was despised by Zeus' wife Hera. One day Hera made Hercules mad and in a rage he killed his wife and children. As a punishment for this Hercules was condemned to perform 12 labours for his rival Eurystheus.
Half in the Bag - 2011 Prometheus 2-12 was released on: USA: 11 June 2012
Young Hercules was created on 1998-09-12.
Hercules Renda died on 2005-10-12.
Oceanus, Atlas, Prometheus, Hyperion, Cronus, Rhea. to name a few
The 12 labors
12