Dial 121 from your Airtel SIM and follow the IVR options to check your number
Dial 198 and ask customer care for your Airtel SIM number
Dial *121# and check the displayed mobile number option
Call or send a message to another phone and see your number on the recipient’s screen
Check the SIM card pack or original documents if the number is printed there
Open the Airtel Thanks app and log in to view your mobile number
Check your phone settings under SIM or About Phone to find the Airtel number
Visit an Airtel store with valid ID proof and ask for your number details