Catarina is the Portuguese form of Catherine — from the Greek katharos, meaning "pure." Queen Catarina de Bragança (1638-1705) was the Portuguese princess who became Queen of England as wife of Charles II, and who introduced tea-drinking to Britain.
Catarina is widely used in Portugal and Brazil.
Catarina does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Catarina reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.