1003221003 has 8 divisors (see below), whose sum is σ = 1368735808. Its totient is φ = 653260104.

The previous prime is 1003220989. The next prime is 1003221013. The reversal of 1003221003 is 3001223001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1003221003 - 2⁴ = 1003220987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003221003.

It is not an unprimeable number, because it can be changed into a prime (1003221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3888325 + ... + 3888582.

It is an arithmetic number, because the mean of its divisors is an integer number (171091976).

Almost surely, 2^1003221003 is an apocalyptic number.

1003221003 is a deficient number, since it is larger than the sum of its proper divisors (365514805).

1003221003 is an equidigital number, since it uses as much as digits as its factorization.

1003221003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776953.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1003221003 is about 31673.6641865131. The cubic root of 1003221003 is about 1001.0725169628.

Adding to 1003221003 its reverse (3001223001), we get a palindrome (4004444004).

The spelling of 1003221003 in words is "one billion, three million, two hundred twenty-one thousand, three".