2232221 has 2 divisors, whose sum is σ = 2232222. Its totient is φ = 2232220.

The previous prime is 2232203. The next prime is 2232229. The reversal of 2232221 is 1222322.

2232221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2208196 + 24025 = 1486^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 2232221 - 2⁶ = 2232157 is a prime.

It is a super-3 number, since 3×2232221³ = 33368203333086389583, which contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2232196 and 2232205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2232229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116110 + 1116111.

It is an arithmetic number, because the mean of its divisors is an integer number (1116111).

2^2232221 is an apocalyptic number.

It is an amenable number.

2232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2232221 is an equidigital number, since it uses as much as digits as its factorization.

2232221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 14.

The square root of 2232221 is about 1494.0619130411. The cubic root of 2232221 is about 130.6910146851.

Adding to 2232221 its reverse (1222322), we get a palindrome (3454543).

The spelling of 2232221 in words is "two million, two hundred thirty-two thousand, two hundred twenty-one".