321322111211 has 4 divisors (see below), whose sum is σ = 321324042624. Its totient is φ = 321320179800.

The previous prime is 321322111189. The next prime is 321322111213. The reversal of 321322111211 is 112111223123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321322111211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321322111213) 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 3 ways as a sum of consecutive naturals, for example, 689900 + ... + 1057641.

It is an arithmetic number, because the mean of its divisors is an integer number (80331010656).

Almost surely, 2^321322111211 is an apocalyptic number.

321322111211 is a deficient number, since it is larger than the sum of its proper divisors (1931413).

321322111211 is a wasteful number, since it uses less digits than its factorization.

321322111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931412.

The product of its digits is 144, while the sum is 20.

Adding to 321322111211 its reverse (112111223123), we get a palindrome (433433334334).

The spelling of 321322111211 in words is "three hundred twenty-one billion, three hundred twenty-two million, one hundred eleven thousand, two hundred eleven".