321132323021 has 4 divisors (see below), whose sum is σ = 321136951200. Its totient is φ = 321127694844.

The previous prime is 321132322963. The next prime is 321132323023. The reversal of 321132323021 is 120323231123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120323231123 = 23269 ⋅5170967.

It is a cyclic number.

It is not a de Polignac number, because 321132323021 - 2⁶ = 321132322957 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 (321132323023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208401 + ... + 2349318.

It is an arithmetic number, because the mean of its divisors is an integer number (80284237800).

Almost surely, 2^321132323021 is an apocalyptic number.

It is an amenable number.

321132323021 is a deficient number, since it is larger than the sum of its proper divisors (4628179).

321132323021 is an equidigital number, since it uses as much as digits as its factorization.

321132323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628178.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 321132323021 its reverse (120323231123), we get a palindrome (441455554144).

The spelling of 321132323021 in words is "three hundred twenty-one billion, one hundred thirty-two million, three hundred twenty-three thousand, twenty-one".