12123133447 has 2 divisors, whose sum is σ = 12123133448. Its totient is φ = 12123133446.

The previous prime is 12123133357. The next prime is 12123133481. The reversal of 12123133447 is 74433132121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12123133447 - 2¹⁵ = 12123100679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123133247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061566723 + 6061566724.

It is an arithmetic number, because the mean of its divisors is an integer number (6061566724).

Almost surely, 2^12123133447 is an apocalyptic number.

12123133447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123133447 is an equidigital number, since it uses as much as digits as its factorization.

12123133447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

Adding to 12123133447 its reverse (74433132121), we get a palindrome (86556265568).

The spelling of 12123133447 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-three thousand, four hundred forty-seven".