12230221 has 2 divisors, whose sum is σ = 12230222. Its totient is φ = 12230220.

The previous prime is 12230209. The next prime is 12230233. The reversal of 12230221 is 12203221.

It is a balanced prime because it is at equal distance from previous prime (12230209) and next prime (12230233).

It can be written as a sum of positive squares in only one way, i.e., 10989225 + 1240996 = 3315^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12230221 - 2⁷ = 12230093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12230521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115110 + 6115111.

It is an arithmetic number, because the mean of its divisors is an integer number (6115111).

Almost surely, 2^12230221 is an apocalyptic number.

It is an amenable number.

12230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12230221 is an equidigital number, since it uses as much as digits as its factorization.

12230221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12230221 is about 3497.1732870992. The cubic root of 12230221 is about 230.3976799877.

Adding to 12230221 its reverse (12203221), we get a palindrome (24433442).

Subtracting from 12230221 its reverse (12203221), we obtain a cube (27000 = 30³).

The spelling of 12230221 in words is "twelve million, two hundred thirty thousand, two hundred twenty-one".