321112212201 has 24 divisors (see below), whose sum is σ = 506047651200. Its totient is φ = 194593212000.

The previous prime is 321112212199. The next prime is 321112212217. The reversal of 321112212201 is 102212211123.

321112212201 is a `hidden beast` number, since 321 + 1 + 122 + 1 + 220 + 1 = 666.

It is not a de Polignac number, because 321112212201 - 2¹ = 321112212199 is a prime.

It is a super-2 number, since 2×321112212201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321112212221) 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 23 ways as a sum of consecutive naturals, for example, 816400 + ... + 1143998.

It is an arithmetic number, because the mean of its divisors is an integer number (21085318800).

Almost surely, 2^321112212201 is an apocalyptic number.

It is an amenable number.

321112212201 is a deficient number, since it is larger than the sum of its proper divisors (184935438999).

321112212201 is a wasteful number, since it uses less digits than its factorization.

321112212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337517 (or 337514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 321112212201 its reverse (102212211123), we get a palindrome (423324423324).

The spelling of 321112212201 in words is "three hundred twenty-one billion, one hundred twelve million, two hundred twelve thousand, two hundred one".