21320304111003 has 4 divisors (see below), whose sum is σ = 28427072148008. Its totient is φ = 14213536074000.

The previous prime is 21320304110983. The next prime is 21320304111047. The reversal of 21320304111003 is 30011140302312.

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

It is not a de Polignac number, because 21320304111003 - 2⁶ = 21320304110939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320304111053) 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, 3553384018498 + ... + 3553384018503.

It is an arithmetic number, because the mean of its divisors is an integer number (7106768037002).

Almost surely, 2^{21320304111003} is an apocalyptic number.

21320304111003 is a deficient number, since it is larger than the sum of its proper divisors (7106768037005).

21320304111003 is an equidigital number, since it uses as much as digits as its factorization.

21320304111003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106768037004.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21320304111003 its reverse (30011140302312), we get a palindrome (51331444413315).

The spelling of 21320304111003 in words is "twenty-one trillion, three hundred twenty billion, three hundred four million, one hundred eleven thousand, three".