Is Harold Camping a prophet?

No. A real and true Prophet doesn't make a mistake in speaking the truth. Not all servants of God are prophets either. Every servant of God has many different abilities. "There are different kinds of gifts but the same spirit. There are different kinds of service, but, the same Lord. There are different kinds of working, but, the same spirit God works in all of them in all men. Now to each one of the manifestation of is given for the common good." 1. Corinthians 12: 4-7.