12213206 has 8 divisors (see below), whose sum is σ = 18336240. Its totient is φ = 6101128.

The previous prime is 12213199. The next prime is 12213221. The reversal of 12213206 is 60231221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (2292030).

Almost surely, 2^12213206 is an apocalyptic number.

12213206 is a deficient number, since it is larger than the sum of its proper divisors (6123034).

12213206 is a wasteful number, since it uses less digits than its factorization.

12213206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5478.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12213206 is about 3494.7397614129. The cubic root of 12213206 is about 230.2907853289.

Adding to 12213206 its reverse (60231221), we get a palindrome (72444427).

The spelling of 12213206 in words is "twelve million, two hundred thirteen thousand, two hundred six".