321440221230221 has 8 divisors (see below), whose sum is σ = 322040641104000. Its totient is φ = 320840227341760.

The previous prime is 321440221230217. The next prime is 321440221230223. The reversal of 321440221230221 is 122032122044123.

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

It is a cyclic number.

It is not a de Polignac number, because 321440221230221 - 2² = 321440221230217 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 (321440221230223) 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, 104985740 + ... + 108004101.

It is an arithmetic number, because the mean of its divisors is an integer number (40255080138000).

Almost surely, 2^{321440221230221} is an apocalyptic number.

It is an amenable number.

321440221230221 is a deficient number, since it is larger than the sum of its proper divisors (600419873779).

321440221230221 is a wasteful number, since it uses less digits than its factorization.

321440221230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212992659.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 321440221230221 its reverse (122032122044123), we get a palindrome (443472343274344).

The spelling of 321440221230221 in words is "three hundred twenty-one trillion, four hundred forty billion, two hundred twenty-one million, two hundred thirty thousand, two hundred twenty-one".