12212011222 has 16 divisors (see below), whose sum is σ = 18882616320. Its totient is φ = 5920234408.

The previous prime is 12212011177. The next prime is 12212011241. The reversal of 12212011222 is 22211021221.

It is a happy number.

12212011222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12212011196 and 12212011205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597022 + ... + 617137.

It is an arithmetic number, because the mean of its divisors is an integer number (1180163520).

Almost surely, 2^12212011222 is an apocalyptic number.

12212011222 is a deficient number, since it is larger than the sum of its proper divisors (6670605098).

12212011222 is a wasteful number, since it uses less digits than its factorization.

12212011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214315.

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

Adding to 12212011222 its reverse (22211021221), we get a palindrome (34423032443).

Subtracting 12212011222 from its reverse (22211021221), we obtain a palindrome (9999009999).

The spelling of 12212011222 in words is "twelve billion, two hundred twelve million, eleven thousand, two hundred twenty-two".