321222221011 has 8 divisors (see below), whose sum is σ = 321774974640. Its totient is φ = 320669572608.

The previous prime is 321222221009. The next prime is 321222221083. The reversal of 321222221011 is 110122222123.

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 321222221011 - 2¹ = 321222221009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321222221011.

It is not an unprimeable number, because it can be changed into a prime (321222221611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8333100 + ... + 8371558.

It is an arithmetic number, because the mean of its divisors is an integer number (40221871830).

Almost surely, 2^321222221011 is an apocalyptic number.

321222221011 is a deficient number, since it is larger than the sum of its proper divisors (552753629).

321222221011 is a wasteful number, since it uses less digits than its factorization.

321222221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52613.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 321222221011 its reverse (110122222123), we get a palindrome (431344443134).

The spelling of 321222221011 in words is "three hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, eleven".