12214221 has 8 divisors (see below), whose sum is σ = 16593120. Its totient is φ = 7989072.

The previous prime is 12214183. The next prime is 12214243. The reversal of 12214221 is 12241221.

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

It is not a de Polignac number, because 12214221 - 2¹⁰ = 12213197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12214221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38251 + ... + 38568.

It is an arithmetic number, because the mean of its divisors is an integer number (2074140).

Almost surely, 2^12214221 is an apocalyptic number.

It is an amenable number.

12214221 is a deficient number, since it is larger than the sum of its proper divisors (4378899).

12214221 is an equidigital number, since it uses as much as digits as its factorization.

12214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76875.

The product of its digits is 64, while the sum is 15.

The square root of 12214221 is about 3494.8849766480. The cubic root of 12214221 is about 230.2971647260.

Adding to 12214221 its reverse (12241221), we get a palindrome (24455442).

Subtracting 12214221 from its reverse (12241221), we obtain a cube (27000 = 30³).

The spelling of 12214221 in words is "twelve million, two hundred fourteen thousand, two hundred twenty-one".