321103113221 has 16 divisors (see below), whose sum is σ = 351677168640. Its totient is φ = 290761482480.

The previous prime is 321103113187. The next prime is 321103113313. The reversal of 321103113221 is 122311301123.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321103113221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321103113193 and 321103113202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321103113421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3290510 + ... + 3386688.

It is an arithmetic number, because the mean of its divisors is an integer number (21979823040).

Almost surely, 2^321103113221 is an apocalyptic number.

It is an amenable number.

321103113221 is a deficient number, since it is larger than the sum of its proper divisors (30574055419).

321103113221 is a wasteful number, since it uses less digits than its factorization.

321103113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97384.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 321103113221 its reverse (122311301123), we get a palindrome (443414414344).

The spelling of 321103113221 in words is "three hundred twenty-one billion, one hundred three million, one hundred thirteen thousand, two hundred twenty-one".