21032002304 has 18 divisors (see below), whose sum is σ = 41981848860. Its totient is φ = 10516001024.

The previous prime is 21032002289. The next prime is 21032002331. The reversal of 21032002304 is 40320023012.

It is a super-2 number, since 2×21032002304² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41077874 + ... + 41078385.

Almost surely, 2^21032002304 is an apocalyptic number.

It is an amenable number.

21032002304 is a deficient number, since it is larger than the sum of its proper divisors (20949846556).

21032002304 is an frugal number, since it uses more digits than its factorization.

21032002304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82156275 (or 82156261 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21032002304 its reverse (40320023012), we get a palindrome (61352025316).

The spelling of 21032002304 in words is "twenty-one billion, thirty-two million, two thousand, three hundred four".