12123122132243 has 2 divisors, whose sum is σ = 12123122132244. Its totient is φ = 12123122132242.

The previous prime is 12123122132239. The next prime is 12123122132279. The reversal of 12123122132243 is 34223122132121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12123122132243 - 2² = 12123122132239 is a prime.

It is a super-2 number, since 2×12123122132243² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12123122131243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061561066121 + 6061561066122.

It is an arithmetic number, because the mean of its divisors is an integer number (6061561066122).

Almost surely, 2^{12123122132243} is an apocalyptic number.

12123122132243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123122132243 is an equidigital number, since it uses as much as digits as its factorization.

12123122132243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

Adding to 12123122132243 its reverse (34223122132121), we get a palindrome (46346244264364).

The spelling of 12123122132243 in words is "twelve trillion, one hundred twenty-three billion, one hundred twenty-two million, one hundred thirty-two thousand, two hundred forty-three".