U+0031 U+20E3 · emoji since 2010
The keycap one is the number 1 on a button. It means first place, number one, top priority, or simply the digit in a list.
It crowns winners, ranks favourites, and counts down steps. When someone is your number one, this is the tidy way to say it.
In texting, 1️⃣ does not carry a widely used hidden or slang meaning, so you can usually take it at face value. People send it just as it looks, to add a little visual touch or set the mood of a message. Only a handful of emoji have a separate texting code, and 1️⃣ is not really one of them.
Its official Unicode name is the Keycap 1 emoji. In everyday chat most people just call it the keycap 1 emoji or describe what it shows. Copy and paste it from the button at the top of this page.
The 1️⃣ leads off a short phrase, and the rest of the words are written in cipher, every letter disguised as another emoji. Tap decipher to reveal the whole line.
Or make your own cipher in the translator.