Noriko is from the Japanese 法子 / 紀子 (Noriko — nori law/rule/order + ko child — child of law, ordered child). Noriko is one of the Japanese feminine names — central to traditional Japanese Imperial heritage. Japanese feminine name reflecting Japanese virtue heritage.
Noriko 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 Noriko reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.