21202304204 has 12 divisors (see below), whose sum is σ = 37471399728. Its totient is φ = 10496190000.

The previous prime is 21202304203. The next prime is 21202304219. The reversal of 21202304204 is 40240320212.

It is not an unprimeable number, because it can be changed into a prime (21202304203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26240072 + ... + 26240879.

It is an arithmetic number, because the mean of its divisors is an integer number (3122616644).

Almost surely, 2^21202304204 is an apocalyptic number.

It is an amenable number.

21202304204 is a deficient number, since it is larger than the sum of its proper divisors (16269095524).

21202304204 is a wasteful number, since it uses less digits than its factorization.

21202304204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52481056 (or 52481054 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21202304204 its reverse (40240320212), we get a palindrome (61442624416).

The spelling of 21202304204 in words is "twenty-one billion, two hundred two million, three hundred four thousand, two hundred four".