12105022605538 has 8 divisors (see below), whose sum is σ = 18157739346000. Its totient is φ = 6052442823540.

The previous prime is 12105022605523. The next prime is 12105022605581. The reversal of 12105022605538 is 83550622050121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12105022605538.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34018368 + ... + 34372363.

It is an arithmetic number, because the mean of its divisors is an integer number (2269717418250).

Almost surely, 2^{12105022605538} is an apocalyptic number.

12105022605538 is a deficient number, since it is larger than the sum of its proper divisors (6052716740462).

12105022605538 is an equidigital number, since it uses as much as digits as its factorization.

12105022605538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68479232.

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 12105022605538 its reverse (83550622050121), we get a palindrome (95655644655659).

The spelling of 12105022605538 in words is "twelve trillion, one hundred five billion, twenty-two million, six hundred five thousand, five hundred thirty-eight".