21232232011321 has 8 divisors (see below), whose sum is σ = 21803177493504. Its totient is φ = 20667595319280.

The previous prime is 21232232011303. The next prime is 21232232011337. The reversal of 21232232011321 is 12311023223212.

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-21232232011321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232232011381) 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, 1577190715 + ... + 1577204176.

It is an arithmetic number, because the mean of its divisors is an integer number (2725397186688).

Almost surely, 2^{21232232011321} is an apocalyptic number.

It is an amenable number.

21232232011321 is a deficient number, since it is larger than the sum of its proper divisors (570945482183).

21232232011321 is a wasteful number, since it uses less digits than its factorization.

21232232011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154395071.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21232232011321 its reverse (12311023223212), we get a palindrome (33543255234533).

The spelling of 21232232011321 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred thirty-two million, eleven thousand, three hundred twenty-one".