1003004221 has 4 divisors (see below), whose sum is σ = 1008255744. Its totient is φ = 997752700.

The previous prime is 1003004207. The next prime is 1003004257. The reversal of 1003004221 is 1224003001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1224003001 = 13 ⋅94154077.

It is a cyclic number.

It is not a de Polignac number, because 1003004221 - 2¹¹ = 1003002173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003005221) 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, 2625475 + ... + 2625856.

It is an arithmetic number, because the mean of its divisors is an integer number (252063936).

Almost surely, 2^1003004221 is an apocalyptic number.

It is an amenable number.

1003004221 is a deficient number, since it is larger than the sum of its proper divisors (5251523).

1003004221 is an equidigital number, since it uses as much as digits as its factorization.

1003004221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251522.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1003004221 is about 31670.2418841410. The cubic root of 1003004221 is about 1001.0004058544. Note that the first 3 decimals are identical.

Adding to 1003004221 its reverse (1224003001), we get a palindrome (2227007222).

The spelling of 1003004221 in words is "one billion, three million, four thousand, two hundred twenty-one".