12322221212 has 24 divisors (see below), whose sum is σ = 25217571456. Its totient is φ = 5158138608.

The previous prime is 12322221161. The next prime is 12322221311. The reversal of 12322221212 is 21212222321.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5115998 + ... + 5118405.

It is an arithmetic number, because the mean of its divisors is an integer number (1050732144).

Almost surely, 2^12322221212 is an apocalyptic number.

It is an amenable number.

12322221212 is an abundant number, since it is smaller than the sum of its proper divisors (12895350244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12322221212 is a wasteful number, since it uses less digits than its factorization.

12322221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234457 (or 10234455 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

Adding to 12322221212 its reverse (21212222321), we get a palindrome (33534443533).

The spelling of 12322221212 in words is "twelve billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".