12123054523 has 2 divisors, whose sum is σ = 12123054524. Its totient is φ = 12123054522.

The previous prime is 12123054497. The next prime is 12123054529. The reversal of 12123054523 is 32545032121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12123054523 - 2²⁵ = 12089500091 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 12123054491 and 12123054500.

It is not a weakly prime, because it can be changed into another prime (12123054529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061527261 + 6061527262.

It is an arithmetic number, because the mean of its divisors is an integer number (6061527262).

Almost surely, 2^12123054523 is an apocalyptic number.

12123054523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123054523 is an equidigital number, since it uses as much as digits as its factorization.

12123054523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 12123054523 its reverse (32545032121), we get a palindrome (44668086644).

The spelling of 12123054523 in words is "twelve billion, one hundred twenty-three million, fifty-four thousand, five hundred twenty-three".