12231222212 has 24 divisors (see below), whose sum is σ = 23353989120. Its totient is φ = 5558819360.

The previous prime is 12231222191. The next prime is 12231222217. The reversal of 12231222212 is 21222213221.

It is not an unprimeable number, because it can be changed into a prime (12231222217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355214 + ... + 388122.

It is an arithmetic number, because the mean of its divisors is an integer number (973082880).

Almost surely, 2^12231222212 is an apocalyptic number.

It is an amenable number.

12231222212 is a deficient number, since it is larger than the sum of its proper divisors (11122766908).

12231222212 is a wasteful number, since it uses less digits than its factorization.

12231222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41371 (or 41369 counting only the distinct ones).

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

Adding to 12231222212 its reverse (21222213221), we get a palindrome (33453435433).

The spelling of 12231222212 in words is "twelve billion, two hundred thirty-one million, two hundred twenty-two thousand, two hundred twelve".