21204303004 has 12 divisors (see below), whose sum is σ = 37113240528. Its totient is φ = 10600520000.

The previous prime is 21204302989. The next prime is 21204303011. The reversal of 21204303004 is 40030340212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378397 + ... + 430804.

It is an arithmetic number, because the mean of its divisors is an integer number (3092770044).

Almost surely, 2^21204303004 is an apocalyptic number.

It is an amenable number.

21204303004 is a deficient number, since it is larger than the sum of its proper divisors (15908937524).

21204303004 is a wasteful number, since it uses less digits than its factorization.

21204303004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815756 (or 815754 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21204303004 its reverse (40030340212), we get a palindrome (61234643216).

The spelling of 21204303004 in words is "twenty-one billion, two hundred four million, three hundred three thousand, four".