1000221303 has 8 divisors (see below), whose sum is σ = 1334415600. Its totient is φ = 666420608.

The previous prime is 1000221251. The next prime is 1000221319. The reversal of 1000221303 is 3031220001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1000221303 - 2²⁴ = 983444087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92418 + ... + 102671.

It is an arithmetic number, because the mean of its divisors is an integer number (166801950).

Almost surely, 2^1000221303 is an apocalyptic number.

1000221303 is a deficient number, since it is larger than the sum of its proper divisors (334194297).

1000221303 is a wasteful number, since it uses less digits than its factorization.

1000221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196801.

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

The square root of 1000221303 is about 31626.2755157796. The cubic root of 1000221303 is about 1000.0737622257.

Adding to 1000221303 its reverse (3031220001), we get a palindrome (4031441304).

The spelling of 1000221303 in words is "one billion, two hundred twenty-one thousand, three hundred three".