321222312011 has 4 divisors (see below), whose sum is σ = 321345059112. Its totient is φ = 321099564912.

The previous prime is 321222311981. The next prime is 321222312049. The reversal of 321222312011 is 110213222123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110213222123 = 853 ⋅129206591.

It is a cyclic number.

It is not a de Polignac number, because 321222312011 - 2¹⁴ = 321222295627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321222312071) 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, 61369625 + ... + 61374858.

It is an arithmetic number, because the mean of its divisors is an integer number (80336264778).

Almost surely, 2^321222312011 is an apocalyptic number.

321222312011 is a deficient number, since it is larger than the sum of its proper divisors (122747101).

321222312011 is a wasteful number, since it uses less digits than its factorization.

321222312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122747100.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 321222312011 its reverse (110213222123), we get a palindrome (431435534134).

The spelling of 321222312011 in words is "three hundred twenty-one billion, two hundred twenty-two million, three hundred twelve thousand, eleven".