212273 has 4 divisors (see below), whose sum is σ = 215040.
Its totient is φ = 209508.
The previous prime is 212243. The next prime is 212281. The reversal of 212273 is 372212.
Multipling 212273 by its sum of digits (17), we get a triangular number (3608641 = T2686).
Adding to 212273 its reverse (372212), we get a palindrome (584485).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is not a de Polignac number, because 212273 - 26 = 212209 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (212203) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 1422.
It is an arithmetic number, because the mean of its divisors is an integer number (53760).
2212273 is an apocalyptic number.
It is an amenable number.
212273 is a deficient number, since it is larger than the sum of its proper divisors (2767).
212273 is an equidigital number, since it uses as much as digits as its factorization.
212273 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2766.
The product of its digits is 168, while the sum is 17.
The square root of 212273 is about 460.7309410057.
The cubic root of 212273 is about 59.6529033445.
The spelling of 212273 in words is "two hundred twelve thousand, two hundred seventy-three", and thus it is an iban number.