21332423311 has 8 divisors (see below), whose sum is σ = 21406196448. Its totient is φ = 21258684000.

The previous prime is 21332423237. The next prime is 21332423339. The reversal of 21332423311 is 11332423312.

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-21332423311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332423351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403021 + ... + 2411881.

It is an arithmetic number, because the mean of its divisors is an integer number (2675774556).

Almost surely, 2^21332423311 is an apocalyptic number.

21332423311 is a deficient number, since it is larger than the sum of its proper divisors (73773137).

21332423311 is an equidigital number, since it uses as much as digits as its factorization.

21332423311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16913.

The product of its digits is 2592, while the sum is 25.

Adding to 21332423311 its reverse (11332423312), we get a palindrome (32664846623).

Subtracting from 21332423311 its reverse (11332423312), we obtain a palindrome (9999999999).

The spelling of 21332423311 in words is "twenty-one billion, three hundred thirty-two million, four hundred twenty-three thousand, three hundred eleven".