12122131123 has 4 divisors (see below), whose sum is σ = 12122680320. Its totient is φ = 12121581928.

The previous prime is 12122131069. The next prime is 12122131139. The reversal of 12122131123 is 32113122121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32113122121 = 41 ⋅783246881.

It is a cyclic number.

It is not a de Polignac number, because 12122131123 - 2²⁵ = 12088576691 is a prime.

It is a super-2 number, since 2×12122131123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122131123.

It is not an unprimeable number, because it can be changed into a prime (12122131183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240040 + ... + 286117.

It is an arithmetic number, because the mean of its divisors is an integer number (3030670080).

Almost surely, 2^12122131123 is an apocalyptic number.

12122131123 is a deficient number, since it is larger than the sum of its proper divisors (549197).

12122131123 is an equidigital number, since it uses as much as digits as its factorization.

12122131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549196.

The product of its digits is 144, while the sum is 19.

Adding to 12122131123 its reverse (32113122121), we get a palindrome (44235253244).

The spelling of 12122131123 in words is "twelve billion, one hundred twenty-two million, one hundred thirty-one thousand, one hundred twenty-three".