1003043221 has 4 divisors (see below), whose sum is σ = 1012974444. Its totient is φ = 993112000.

The previous prime is 1003043189. The next prime is 1003043227. The reversal of 1003043221 is 1223403001.

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 796086225 + 206956996 = 28215^2 + 14386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003043221 - 2⁵ = 1003043189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003043195 and 1003043204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003043227) 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 3 ways as a sum of consecutive naturals, for example, 4965460 + ... + 4965661.

It is an arithmetic number, because the mean of its divisors is an integer number (253243611).

Almost surely, 2^1003043221 is an apocalyptic number.

It is an amenable number.

1003043221 is a deficient number, since it is larger than the sum of its proper divisors (9931223).

1003043221 is an equidigital number, since it uses as much as digits as its factorization.

1003043221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9931222.

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

The square root of 1003043221 is about 31670.8575981138. The cubic root of 1003043221 is about 1001.0133797147.

Adding to 1003043221 its reverse (1223403001), we get a palindrome (2226446222).

The spelling of 1003043221 in words is "one billion, three million, forty-three thousand, two hundred twenty-one".