Lalitha (ललिता) is the Sanskrit word for "graceful" or "charming." Lalita Tripurasundari is one of the principal forms of the goddess Adi Parashakti, especially worshipped in South India.
Lalitha is widely used in India.
Lalitha 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 Lalitha reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.