It's not 2246p because 720p or i and 1080p go by height so 2246 x 1080 would be 1080p too. Even if it is a phone, you still go by lowest just like 1920 x 1080 phones are called 1080p, not 1920p. You could say it's 2k which goes by width and covers multiple 2k wide resolutions but it's a non standard res so it's not going to have a commonly used shortened term which is just marketing for the most part anyways. You should say the res to not confuse it with 1920 x 1080 or 2560 x 1080 or other 1080 resolutions.