12123132523 has 2 divisors, whose sum is σ = 12123132524. Its totient is φ = 12123132522.

The previous prime is 12123132509. The next prime is 12123132641. The reversal of 12123132523 is 32523132121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12123132523 - 2⁹ = 12123132011 is a prime.

It is not a weakly prime, because it can be changed into another prime (12123132223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061566261 + 6061566262.

It is an arithmetic number, because the mean of its divisors is an integer number (6061566262).

Almost surely, 2^12123132523 is an apocalyptic number.

12123132523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123132523 is an equidigital number, since it uses as much as digits as its factorization.

12123132523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

Adding to 12123132523 its reverse (32523132121), we get a palindrome (44646264644).

The spelling of 12123132523 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-two thousand, five hundred twenty-three".