21232321333 has 8 divisors (see below), whose sum is σ = 21279853760. Its totient is φ = 21184843680.

The previous prime is 21232321291. The next prime is 21232321379. The reversal of 21232321333 is 33312323212.

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-21232321333 is a prime.

It is a super-2 number, since 2×21232321333² (a number of 21 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 = 21232321298 and 21232321307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232331333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817873 + ... + 843433.

It is an arithmetic number, because the mean of its divisors is an integer number (2659981720).

Almost surely, 2^21232321333 is an apocalyptic number.

It is an amenable number.

21232321333 is a deficient number, since it is larger than the sum of its proper divisors (47532427).

21232321333 is an equidigital number, since it uses as much as digits as its factorization.

21232321333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27387.

The product of its digits is 3888, while the sum is 25.

Adding to 21232321333 its reverse (33312323212), we get a palindrome (54544644545).

The spelling of 21232321333 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-one thousand, three hundred thirty-three".