12126050321138 has 32 divisors (see below), whose sum is σ = 20742993298944. Its totient is φ = 5266787357952.

The previous prime is 12126050321131. The next prime is 12126050321149. The reversal of 12126050321138 is 83112305062121.

It is a junction number, because it is equal to n+sod(n) for n = 12126050321098 and 12126050321107.

It is not an unprimeable number, because it can be changed into a prime (12126050321131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2007581 + ... + 5318127.

It is an arithmetic number, because the mean of its divisors is an integer number (648218540592).

Almost surely, 2^{12126050321138} is an apocalyptic number.

12126050321138 is a deficient number, since it is larger than the sum of its proper divisors (8616942977806).

12126050321138 is a wasteful number, since it uses less digits than its factorization.

12126050321138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318866.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 12126050321138 its reverse (83112305062121), we get a palindrome (95238355383259).

The spelling of 12126050321138 in words is "twelve trillion, one hundred twenty-six billion, fifty million, three hundred twenty-one thousand, one hundred thirty-eight".