12144112235555 has 4 divisors (see below), whose sum is σ = 14572934682672. Its totient is φ = 9715289788440.

The previous prime is 12144112235477. The next prime is 12144112235599. The reversal of 12144112235555 is 55553221144121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12144112235555 - 2⁴² = 7746065724451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1214411223551 + ... + 1214411223560.

It is an arithmetic number, because the mean of its divisors is an integer number (3643233670668).

Almost surely, 2^{12144112235555} is an apocalyptic number.

12144112235555 is a deficient number, since it is larger than the sum of its proper divisors (2428822447117).

12144112235555 is an equidigital number, since it uses as much as digits as its factorization.

12144112235555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428822447116.

The product of its digits is 240000, while the sum is 41.

Adding to 12144112235555 its reverse (55553221144121), we get a palindrome (67697333379676).

The spelling of 12144112235555 in words is "twelve trillion, one hundred forty-four billion, one hundred twelve million, two hundred thirty-five thousand, five hundred fifty-five".