21233302332221 has 8 divisors (see below), whose sum is σ = 24266670835200. Its totient is φ = 18199943728848.

The previous prime is 21233302332169. The next prime is 21233302332289. The reversal of 21233302332221 is 12223320333212.

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

It is not a de Polignac number, because 21233302332221 - 2³⁴ = 21216122463037 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 (21233302334221) 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, 2899220 + ... + 7132466.

It is an arithmetic number, because the mean of its divisors is an integer number (3033333854400).

Almost surely, 2^{21233302332221} is an apocalyptic number.

It is an amenable number.

21233302332221 is a deficient number, since it is larger than the sum of its proper divisors (3033368502979).

21233302332221 is an equidigital number, since it uses as much as digits as its factorization.

21233302332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949803.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21233302332221 its reverse (12223320333212), we get a palindrome (33456622665433).

The spelling of 21233302332221 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred two million, three hundred thirty-two thousand, two hundred twenty-one".