1004041221 has 16 divisors (see below), whose sum is σ = 1347139584. Its totient is φ = 665163504.

The previous prime is 1004041217. The next prime is 1004041229. The reversal of 1004041221 is 1221404001.

1004041221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1004041221 - 2² = 1004041217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004041229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525550 + ... + 527456.

It is an arithmetic number, because the mean of its divisors is an integer number (84196224).

Almost surely, 2^1004041221 is an apocalyptic number.

It is an amenable number.

1004041221 is a deficient number, since it is larger than the sum of its proper divisors (343098363).

1004041221 is a wasteful number, since it uses less digits than its factorization.

1004041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1004041221 is about 31686.6094904456. The cubic root of 1004041221 is about 1001.3452631223.

Adding to 1004041221 its reverse (1221404001), we get a palindrome (2225445222).

The spelling of 1004041221 in words is "one billion, four million, forty-one thousand, two hundred twenty-one".