21323302011303 has 4 divisors (see below), whose sum is σ = 28431069348408. Its totient is φ = 14215534674200.

The previous prime is 21323302011283. The next prime is 21323302011377. The reversal of 21323302011303 is 30311020332312.

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 21323302011303 - 2¹⁸ = 21323301749159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323302011103) 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, 3553883668548 + ... + 3553883668553.

It is an arithmetic number, because the mean of its divisors is an integer number (7107767337102).

Almost surely, 2^{21323302011303} is an apocalyptic number.

21323302011303 is a deficient number, since it is larger than the sum of its proper divisors (7107767337105).

21323302011303 is an equidigital number, since it uses as much as digits as its factorization.

21323302011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7107767337104.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21323302011303 its reverse (30311020332312), we get a palindrome (51634322343615).

The spelling of 21323302011303 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred two million, eleven thousand, three hundred three".