21302300003 has 4 divisors (see below), whose sum is σ = 21320617848. Its totient is φ = 21283982160.

The previous prime is 21302299999. The next prime is 21302300009. The reversal of 21302300003 is 30000320312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21302300003 - 2² = 21302299999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302300009) 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, 9157178 + ... + 9159503.

It is an arithmetic number, because the mean of its divisors is an integer number (5330154462).

Almost surely, 2^21302300003 is an apocalyptic number.

21302300003 is a deficient number, since it is larger than the sum of its proper divisors (18317845).

21302300003 is a wasteful number, since it uses less digits than its factorization.

21302300003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18317844.

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

Adding to 21302300003 its reverse (30000320312), we get a palindrome (51302620315).

The spelling of 21302300003 in words is "twenty-one billion, three hundred two million, three hundred thousand, three".