212213222321 has 16 divisors (see below), whose sum is σ = 217450622976. Its totient is φ = 207006633936.

The previous prime is 212213222303. The next prime is 212213222323. The reversal of 212213222321 is 123222312212.

It is a happy number.

212213222321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212213222321 - 2²⁶ = 212146113457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212213222323) 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 15 ways as a sum of consecutive naturals, for example, 42550790 + ... + 42555776.

It is an arithmetic number, because the mean of its divisors is an integer number (13590663936).

Almost surely, 2^212213222321 is an apocalyptic number.

It is an amenable number.

212213222321 is a deficient number, since it is larger than the sum of its proper divisors (5237400655).

212213222321 is a wasteful number, since it uses less digits than its factorization.

212213222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7868.

The product of its digits is 1152, while the sum is 23.

Adding to 212213222321 its reverse (123222312212), we get a palindrome (335435534533).

The spelling of 212213222321 in words is "two hundred twelve billion, two hundred thirteen million, two hundred twenty-two thousand, three hundred twenty-one".