1104221 has 2 divisors, whose sum is σ = 1104222.
Its totient is φ = 1104220.
The previous prime is 1104217. The next prime is 1104241. The reversal of 1104221 is 1224011.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 784996 + 319225 = 886^2 + 565^2
It is a cyclic number.
It is not a de Polignac number, because 1104221 - 22 = 1104217 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1104241) 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, 552110 + 552111.
It is an arithmetic number, because the mean of its divisors is an integer number (552111).
21104221 is an apocalyptic number.
It is an amenable number.
1104221 is a deficient number, since it is larger than the sum of its proper divisors (1).
1104221 is an equidigital number, since it uses as much as digits as its factorization.
1104221 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 1104221 is about 1050.8192042402.
The cubic root of 1104221 is about 103.3598810273.
Adding to 1104221 its reverse (1224011), we get a palindrome (2328232).
The spelling of 1104221 in words is "one million, one hundred four thousand, two hundred twenty-one".