21323311333 has 8 divisors (see below), whose sum is σ = 21457453248. Its totient is φ = 21189246624.

The previous prime is 21323311309. The next prime is 21323311367. The reversal of 21323311333 is 33311332312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21323311333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323311298 and 21323311307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323311133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596010 + ... + 630772.

It is an arithmetic number, because the mean of its divisors is an integer number (2682181656).

Almost surely, 2^21323311333 is an apocalyptic number.

It is an amenable number.

21323311333 is a deficient number, since it is larger than the sum of its proper divisors (134141915).

21323311333 is a wasteful number, since it uses less digits than its factorization.

21323311333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38603.

The product of its digits is 2916, while the sum is 25.

Adding to 21323311333 its reverse (33311332312), we get a palindrome (54634643645).

The spelling of 21323311333 in words is "twenty-one billion, three hundred twenty-three million, three hundred eleven thousand, three hundred thirty-three".