211223 has 4 divisors (see below), whose sum is σ = 222360. Its totient is φ = 200088.

The previous prime is 211219. The next prime is 211229. The reversal of 211223 is 322112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211223 - 2² = 211219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211229) 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, 5540 + ... + 5577.

It is an arithmetic number, because the mean of its divisors is an integer number (55590).

2²¹¹²²³ is an apocalyptic number.

211223 is a deficient number, since it is larger than the sum of its proper divisors (11137).

211223 is a wasteful number, since it uses less digits than its factorization.

211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11136.

The product of its digits is 24, while the sum is 11.

The square root of 211223 is about 459.5900347048. The cubic root of 211223 is about 59.5543838154.

Adding to 211223 its reverse (322112), we get a palindrome (533335).

Subtracting 211223 from its reverse (322112), we obtain a square (110889 = 333²).

It can be divided in two parts, 211 and 223, that added together give a palindrome (434).

The spelling of 211223 in words is "two hundred eleven thousand, two hundred twenty-three", and thus it is an iban number.