1000021303 has 8 divisors (see below), whose sum is σ = 1021752000. Its totient is φ = 978309600.

The previous prime is 1000021291. The next prime is 1000021333. The reversal of 1000021303 is 3031200001.

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 1000021303 - 2²⁵ = 966466871 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 1000021303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000021333) 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, 171073 + ... + 176821.

It is an arithmetic number, because the mean of its divisors is an integer number (127719000).

Almost surely, 2^1000021303 is an apocalyptic number.

1000021303 is a deficient number, since it is larger than the sum of its proper divisors (21730697).

1000021303 is an equidigital number, since it uses as much as digits as its factorization.

1000021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9497.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1000021303 is about 31623.1134298949. The cubic root of 1000021303 is about 1000.0071009496.

Adding to 1000021303 its reverse (3031200001), we get a palindrome (4031221304).

The spelling of 1000021303 in words is "one billion, twenty-one thousand, three hundred three".