1120121domain: NPropertiesPrimalityPrimeyesAppears in sequencesDihedral calculator primes: p, p upside down, p in a mirror, p upside-down-and-in-a-mirror are all primes.at n=33A134996Palindromic primes in the sense of A007500 with digits '0', '1' and '2' only.at n=22A199302Prime numbersat n=87174