Question: what is the 2 emoji?
Answer: The Keycap Digit Two emoji is a keycap sequence combining 2 Digit Two and ⃣ Combining Enclosing Keycap. These display as a single emoji on supported platforms. Keycap Digit Two was approved as part of Unicode 3.0 in 1999 and added to Emoji 3.0 in 2016.