12123151260775 has 6 divisors (see below), whose sum is σ = 15032707563392. Its totient is φ = 9698521008600.

The previous prime is 12123151260751. The next prime is 12123151260791. The reversal of 12123151260775 is 57706215132121.

It is not a de Polignac number, because 12123151260775 - 2⁵ = 12123151260743 is a prime.

It is a Duffinian number.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 242463025191 + ... + 242463025240.

Almost surely, 2^{12123151260775} is an apocalyptic number.

12123151260775 is a deficient number, since it is larger than the sum of its proper divisors (2909556302617).

12123151260775 is an equidigital number, since it uses as much as digits as its factorization.

12123151260775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484926050441 (or 484926050436 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

Adding to 12123151260775 its reverse (57706215132121), we get a palindrome (69829366392896).

The spelling of 12123151260775 in words is "twelve trillion, one hundred twenty-three billion, one hundred fifty-one million, two hundred sixty thousand, seven hundred seventy-five".