11004221 has 2 divisors, whose sum is σ = 11004222. Its totient is φ = 11004220.

The previous prime is 11004209. The next prime is 11004233. The reversal of 11004221 is 12240011.

It is a balanced prime because it is at equal distance from previous prime (11004209) and next prime (11004233).

It can be written as a sum of positive squares in only one way, i.e., 8916196 + 2088025 = 2986^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 11004221 - 2¹⁰ = 11003197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11004271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502110 + 5502111.

It is an arithmetic number, because the mean of its divisors is an integer number (5502111).

Almost surely, 2^11004221 is an apocalyptic number.

It is an amenable number.

11004221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11004221 is an equidigital number, since it uses as much as digits as its factorization.

11004221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 11004221 is about 3317.2610690146. The cubic root of 11004221 is about 222.4264521463.

Adding to 11004221 its reverse (12240011), we get a palindrome (23244232).

The spelling of 11004221 in words is "eleven million, four thousand, two hundred twenty-one".