21303000003323 has 4 divisors (see below), whose sum is σ = 21303010388520. Its totient is φ = 21302989618128.

The previous prime is 21303000003251. The next prime is 21303000003361. The reversal of 21303000003323 is 32330000030312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21303000003323 - 2³⁶ = 21234280526587 is a prime.

It is a super-2 number, since 2×21303000003323² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21303000003295 and 21303000003304.

It is not an unprimeable number, because it can be changed into a prime (21303000000323) 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, 972338 + ... + 6599351.

It is an arithmetic number, because the mean of its divisors is an integer number (5325752597130).

Almost surely, 2^{21303000003323} is an apocalyptic number.

21303000003323 is a deficient number, since it is larger than the sum of its proper divisors (10385197).

21303000003323 is an equidigital number, since it uses as much as digits as its factorization.

21303000003323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10385196.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 21303000003323 its reverse (32330000030312), we get a palindrome (53633000033635).

The spelling of 21303000003323 in words is "twenty-one trillion, three hundred three billion, three thousand, three hundred twenty-three".