12222210211 has 4 divisors (see below), whose sum is σ = 12222453400. Its totient is φ = 12221967024.

The previous prime is 12222210193. The next prime is 12222210223. The reversal of 12222210211 is 11201222221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12222210211 - 2²³ = 12213821603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222210241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15141 + ... + 157078.

It is an arithmetic number, because the mean of its divisors is an integer number (3055613350).

Almost surely, 2^12222210211 is an apocalyptic number.

12222210211 is a deficient number, since it is larger than the sum of its proper divisors (243189).

12222210211 is an equidigital number, since it uses as much as digits as its factorization.

12222210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243188.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222210211 its reverse (11201222221), we get a palindrome (23423432432).

The spelling of 12222210211 in words is "twelve billion, two hundred twenty-two million, two hundred ten thousand, two hundred eleven".