21303020204 has 12 divisors (see below), whose sum is σ = 37527175728. Its totient is φ = 10580970000.

The previous prime is 21303020171. The next prime is 21303020227. The reversal of 21303020204 is 40202030312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17634347 + ... + 17635554.

It is an arithmetic number, because the mean of its divisors is an integer number (3127264644).

Almost surely, 2^21303020204 is an apocalyptic number.

It is an amenable number.

21303020204 is a deficient number, since it is larger than the sum of its proper divisors (16224155524).

21303020204 is a wasteful number, since it uses less digits than its factorization.

21303020204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35270056 (or 35270054 counting only the distinct ones).

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

Adding to 21303020204 its reverse (40202030312), we get a palindrome (61505050516).

The spelling of 21303020204 in words is "twenty-one billion, three hundred three million, twenty thousand, two hundred four".