1004223021 has 16 divisors (see below), whose sum is σ = 1385103360. Its totient is φ = 646504560.

The previous prime is 1004223019. The next prime is 1004223037. The reversal of 1004223021 is 1203224001.

It is not a de Polignac number, because 1004223021 - 2¹ = 1004223019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004223091) 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 15 ways as a sum of consecutive naturals, for example, 33276 + ... + 55818.

It is an arithmetic number, because the mean of its divisors is an integer number (86568960).

Almost surely, 2^1004223021 is an apocalyptic number.

It is an amenable number.

1004223021 is a deficient number, since it is larger than the sum of its proper divisors (380880339).

1004223021 is a wasteful number, since it uses less digits than its factorization.

1004223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23056.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1004223021 is about 31689.4780802714. The cubic root of 1004223021 is about 1001.4056967574.

Adding to 1004223021 its reverse (1203224001), we get a palindrome (2207447022).

The spelling of 1004223021 in words is "one billion, four million, two hundred twenty-three thousand, twenty-one".