12123342255 has 16 divisors (see below), whose sum is σ = 20418261120. Its totient is φ = 6125478048.

The previous prime is 12123342227. The next prime is 12123342289. The reversal of 12123342255 is 55224332121.

It is not a de Polignac number, because 12123342255 - 2⁸ = 12123341999 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 21268737 + ... + 21269306.

It is an arithmetic number, because the mean of its divisors is an integer number (1276141320).

Almost surely, 2^12123342255 is an apocalyptic number.

12123342255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12123342255 is a deficient number, since it is larger than the sum of its proper divisors (8294918865).

12123342255 is a wasteful number, since it uses less digits than its factorization.

12123342255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42538070.

The product of its digits is 14400, while the sum is 30.

Adding to 12123342255 its reverse (55224332121), we get a palindrome (67347674376).

The spelling of 12123342255 in words is "twelve billion, one hundred twenty-three million, three hundred forty-two thousand, two hundred fifty-five".