12031231222 has 16 divisors (see below), whose sum is σ = 18294428160. Its totient is φ = 5933648448.

The previous prime is 12031231193. The next prime is 12031231229. The reversal of 12031231222 is 22213213021.

12031231222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12031231222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12031231222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031231229) by changing a digit.

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, 96822 + ... + 182857.

It is an arithmetic number, because the mean of its divisors is an integer number (1143401760).

Almost surely, 2^12031231222 is an apocalyptic number.

12031231222 is a deficient number, since it is larger than the sum of its proper divisors (6263196938).

12031231222 is a wasteful number, since it uses less digits than its factorization.

12031231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279975.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12031231222 its reverse (22213213021), we get a palindrome (34244444243).

It can be divided in two parts, 12031 and 231222, that added together give a triangular number (243253 = T₆₉₇).

The spelling of 12031231222 in words is "twelve billion, thirty-one million, two hundred thirty-one thousand, two hundred twenty-two".