21300302003 has 8 divisors (see below), whose sum is σ = 21446964000. Its totient is φ = 21153689728.

The previous prime is 21300301993. The next prime is 21300302021. The reversal of 21300302003 is 30020300312.

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

It is a de Polignac number, because none of the positive numbers 2^k-21300302003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300302033) 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, 1368875 + ... + 1384347.

It is an arithmetic number, because the mean of its divisors is an integer number (2680870500).

Almost surely, 2^21300302003 is an apocalyptic number.

21300302003 is a deficient number, since it is larger than the sum of its proper divisors (146661997).

21300302003 is a wasteful number, since it uses less digits than its factorization.

21300302003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24861.

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 21300302003 its reverse (30020300312), we get a palindrome (51320602315).

The spelling of 21300302003 in words is "twenty-one billion, three hundred million, three hundred two thousand, three".