321432330142221 has 8 divisors (see below), whose sum is σ = 453786819024384. Its totient is φ = 201683030677440.

The previous prime is 321432330142213. The next prime is 321432330142237. The reversal of 321432330142221 is 122241033234123.

It is a happy number.

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

It is not a de Polignac number, because 321432330142221 - 2³ = 321432330142213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321432330142211) 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, 3151297354285 + ... + 3151297354386.

It is an arithmetic number, because the mean of its divisors is an integer number (56723352378048).

Almost surely, 2^{321432330142221} is an apocalyptic number.

It is an amenable number.

321432330142221 is a deficient number, since it is larger than the sum of its proper divisors (132354488882163).

321432330142221 is a wasteful number, since it uses less digits than its factorization.

321432330142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302594708691.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 321432330142221 its reverse (122241033234123), we get a palindrome (443673363376344).

The spelling of 321432330142221 in words is "three hundred twenty-one trillion, four hundred thirty-two billion, three hundred thirty million, one hundred forty-two thousand, two hundred twenty-one".