34224221 has 2 divisors, whose sum is σ = 34224222. Its totient is φ = 34224220.

The previous prime is 34224209. The next prime is 34224227. The reversal of 34224221 is 12242243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 14100025 = 4486^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 34224221 - 2¹⁴ = 34207837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34224193 and 34224202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34224227) 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, 17112110 + 17112111.

It is an arithmetic number, because the mean of its divisors is an integer number (17112111).

Almost surely, 2^34224221 is an apocalyptic number.

It is an amenable number.

34224221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34224221 is an equidigital number, since it uses as much as digits as its factorization.

34224221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 20.

The square root of 34224221 is about 5850.1470921679. The cubic root of 34224221 is about 324.6717664427.

Adding to 34224221 its reverse (12242243), we get a palindrome (46466464).

It can be divided in two parts, 3 and 4224221, that added together give a palindrome (4224224).

The spelling of 34224221 in words is "thirty-four million, two hundred twenty-four thousand, two hundred twenty-one".