212211223 has 8 divisors (see below), whose sum is σ = 244379520. Its totient is φ = 180506040.

The previous prime is 212211193. The next prime is 212211269. The reversal of 212211223 is 322112212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212211223 - 2⁵ = 212211191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212211197 and 212211206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114793 + ... + 116626.

It is an arithmetic number, because the mean of its divisors is an integer number (30547440).

Almost surely, 2^212211223 is an apocalyptic number.

212211223 is a deficient number, since it is larger than the sum of its proper divisors (32168297).

212211223 is a wasteful number, since it uses less digits than its factorization.

212211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231557.

The product of its digits is 96, while the sum is 16.

The square root of 212211223 is about 14567.4714003495. The cubic root of 212211223 is about 596.4711593090.

Adding to 212211223 its reverse (322112212), we get a palindrome (534323435).

The spelling of 212211223 in words is "two hundred twelve million, two hundred eleven thousand, two hundred twenty-three".