212223 has 16 divisors (see below), whose sum is σ = 316800. Its totient is φ = 125280.

The previous prime is 212209. The next prime is 212227. The reversal of 212223 is 322212.

It is not a de Polignac number, because 212223 - 2⁴ = 212207 is a prime.

It is a plaindrome in base 16.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 212199 and 212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1893 + ... + 2001.

It is an arithmetic number, because the mean of its divisors is an integer number (19800).

2²¹²²²³ is an apocalyptic number.

212223 is a deficient number, since it is larger than the sum of its proper divisors (104577).

212223 is a wasteful number, since it uses less digits than its factorization.

212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182.

The product of its digits is 48, while the sum is 12.

The square root of 212223 is about 460.6766762058. The cubic root of 212223 is about 59.6482193144.

Adding to 212223 its reverse (322212), we get a palindrome (534435).

It can be divided in two parts, 2122 and 23, that added together give a triangular number (2145 = T₆₅).

The spelling of 212223 in words is "two hundred twelve thousand, two hundred twenty-three", and thus it is an iban number.