1004330221 has 4 divisors (see below), whose sum is σ = 1010135772. Its totient is φ = 998524672.

The previous prime is 1004330207. The next prime is 1004330269. The reversal of 1004330221 is 1220334001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 944886121 + 59444100 = 30739^2 + 7710^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004330221 - 2¹³ = 1004322029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004330195 and 1004330204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004330521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2902516 + ... + 2902861.

It is an arithmetic number, because the mean of its divisors is an integer number (252533943).

Almost surely, 2^1004330221 is an apocalyptic number.

It is an amenable number.

1004330221 is a deficient number, since it is larger than the sum of its proper divisors (5805551).

1004330221 is an equidigital number, since it uses as much as digits as its factorization.

1004330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805550.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1004330221 is about 31691.1694482864. The cubic root of 1004330221 is about 1001.4413285739.

Adding to 1004330221 its reverse (1220334001), we get a palindrome (2224664222).

The spelling of 1004330221 in words is "one billion, four million, three hundred thirty thousand, two hundred twenty-one".