12122131112123 has 4 divisors (see below), whose sum is σ = 12169298937720. Its totient is φ = 12074963286528.

The previous prime is 12122131112099. The next prime is 12122131112171. The reversal of 12122131112123 is 32121113122121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12122131112123 - 2²² = 12122126917819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122131112183) 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, 23583912413 + ... + 23583912926.

It is an arithmetic number, because the mean of its divisors is an integer number (3042324734430).

Almost surely, 2^{12122131112123} is an apocalyptic number.

12122131112123 is a deficient number, since it is larger than the sum of its proper divisors (47167825597).

12122131112123 is an equidigital number, since it uses as much as digits as its factorization.

12122131112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47167825596.

The product of its digits is 288, while the sum is 23.

Adding to 12122131112123 its reverse (32121113122121), we get a palindrome (44243244234244).

The spelling of 12122131112123 in words is "twelve trillion, one hundred twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, one hundred twenty-three".