12129811422 has 8 divisors (see below), whose sum is σ = 24259622856. Its totient is φ = 4043270472.

The previous prime is 12129811381. The next prime is 12129811429. The reversal of 12129811422 is 22411892121.

It is a sphenic number, since it is the product of 3 distinct primes.

12129811422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129811429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010817613 + ... + 1010817624.

It is an arithmetic number, because the mean of its divisors is an integer number (3032452857).

Almost surely, 2^12129811422 is an apocalyptic number.

12129811422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12129811422 is a wasteful number, since it uses less digits than its factorization.

12129811422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021635242.

The product of its digits is 4608, while the sum is 33.

The spelling of 12129811422 in words is "twelve billion, one hundred twenty-nine million, eight hundred eleven thousand, four hundred twenty-two".