1️⃣2️⃣1️⃣🔄

#palindrome #symmetrical number #same backwards #numerical palindrome

↔️1️⃣1️⃣0️⃣1️⃣1️⃣↔️

#palindrome #numeric palindrome #symmetrical number #reads same backwards

🪞3️⃣1️⃣1️⃣3️⃣

#3113 #palindrome #mirror number #symmetrical number #number 3113