21303300003 has 8 divisors (see below), whose sum is σ = 29097190416. Its totient is φ = 13855804800.

The previous prime is 21303299999. The next prime is 21303300059. The reversal of 21303300003 is 30000330312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21303300003 - 2² = 21303299999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21303300703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86598658 + ... + 86598903.

It is an arithmetic number, because the mean of its divisors is an integer number (3637148802).

Almost surely, 2^21303300003 is an apocalyptic number.

21303300003 is a deficient number, since it is larger than the sum of its proper divisors (7793890413).

21303300003 is a wasteful number, since it uses less digits than its factorization.

21303300003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173197605.

The product of its (nonzero) digits is 162, while the sum is 15.

Adding to 21303300003 its reverse (30000330312), we get a palindrome (51303630315).

The spelling of 21303300003 in words is "twenty-one billion, three hundred three million, three hundred thousand, three".