"XI" or "Eleven" is a number that comes after ten and before twelve in the sequence of natural numbers. It is represented as "11" in Arabic numerals and is often used in various counting systems. In Roman numerals, it is written as "XI." In many cultures, the number eleven holds significance. For example, in sports, a standard soccer team consists of eleven players. Additionally, in numerology, eleven is considered a master number, symbolizing intuition and insight. The number is also associated with various mythologies and belief systems, often representing duality or balance.