do they have special genes? ... the answer is no
That's not true. In Sardinia and Okinawa studies have shown that genetics play a significant factor in longevity. For example, Sardinians have historically tended to reproduce later in life. This has favoured genes that contribute to longevity, or at least it has selected against those that contribute to early mortality.
A healthy lifestyle will contribute to a longer life, but it's misleading to imagine that everyone could achieve 100 if they just made the effort.