Tzipi (צִיפִּי) is the diminutive of Tzipora (צִפּוֹרָה) — the Hebrew word for "bird" or "sparrow." Moses's wife was Tzipora.
Tzipi Livni (born 1958) is the Israeli politician, former Foreign Minister.
Tzipi 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 Tzipi reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.