222000212321 has 4 divisors (see below), whose sum is σ = 222050138112. Its totient is φ = 221950286532.

The previous prime is 222000212267. The next prime is 222000212333. The reversal of 222000212321 is 123212000222.

222000212321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222000212321 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 222000212321.

It is not an unprimeable number, because it can be changed into a prime (222000212341) 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 3 ways as a sum of consecutive naturals, for example, 24956225 + ... + 24965118.

It is an arithmetic number, because the mean of its divisors is an integer number (55512534528).

Almost surely, 2^222000212321 is an apocalyptic number.

It is an amenable number.

222000212321 is a deficient number, since it is larger than the sum of its proper divisors (49925791).

222000212321 is an equidigital number, since it uses as much as digits as its factorization.

222000212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49925790.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 222000212321 its reverse (123212000222), we get a palindrome (345212212543).

The spelling of 222000212321 in words is "two hundred twenty-two billion, two hundred twelve thousand, three hundred twenty-one".