321321103221 has 16 divisors (see below), whose sum is σ = 432989480000. Its totient is φ = 211934873088.

The previous prime is 321321103177. The next prime is 321321103253. The reversal of 321321103221 is 122301123123.

It is not a de Polignac number, because 321321103221 - 2⁹ = 321321102709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321321105221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695655 + ... + 1061403.

It is an arithmetic number, because the mean of its divisors is an integer number (27061842500).

Almost surely, 2^321321103221 is an apocalyptic number.

It is an amenable number.

321321103221 is a deficient number, since it is larger than the sum of its proper divisors (111668376779).

321321103221 is a wasteful number, since it uses less digits than its factorization.

321321103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368868.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321321103221 its reverse (122301123123), we get a palindrome (443622226344).

The spelling of 321321103221 in words is "three hundred twenty-one billion, three hundred twenty-one million, one hundred three thousand, two hundred twenty-one".