2226221 has 2 divisors, whose sum is σ = 2226222. Its totient is φ = 2226220.

The previous prime is 2226199. The next prime is 2226227. The reversal of 2226221 is 1226222.

2226221 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., 1755625 + 470596 = 1325^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 2226221 - 2¹⁸ = 1964077 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2226221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2226227) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113110 + 1113111.

It is an arithmetic number, because the mean of its divisors is an integer number (1113111).

2^2226221 is an apocalyptic number.

It is an amenable number.

2226221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2226221 is an equidigital number, since it uses as much as digits as its factorization.

2226221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 2226221 is about 1492.0526130134. The cubic root of 2226221 is about 130.5738145648.

Subtracting from 2226221 its reverse (1226222), we obtain a palindrome (999999).

The spelling of 2226221 in words is "two million, two hundred twenty-six thousand, two hundred twenty-one".