How to type N-ary Summation
- Windows: no Alt code exists for this character; use the copy button above or the HTML entity below.
- Mac: Option+w.
- HTML:
∑or∑. - Chromebook: Ctrl+Shift+U, type 2211, then Enter.
Reference
- Unicode name: N-ARY SUMMATION
- Code point: U+2211
- Category: Math & measurement
- Also searched as: sum sigma total
Symbol data last reviewed: July 9, 2026.