12231212422 has 48 divisors (see below), whose sum is σ = 21872291760. Its totient is φ = 5084726400.

The previous prime is 12231212407. The next prime is 12231212447. The reversal of 12231212422 is 22421213221.

12231212422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12231212393 and 12231212402.

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 23 ways as a sum of consecutive naturals, for example, 390172 + ... + 420352.

It is an arithmetic number, because the mean of its divisors is an integer number (455672745).

Almost surely, 2^12231212422 is an apocalyptic number.

12231212422 is a deficient number, since it is larger than the sum of its proper divisors (9641079338).

12231212422 is a wasteful number, since it uses less digits than its factorization.

12231212422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30329 (or 30316 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

Adding to 12231212422 its reverse (22421213221), we get a palindrome (34652425643).

The spelling of 12231212422 in words is "twelve billion, two hundred thirty-one million, two hundred twelve thousand, four hundred twenty-two".