12122120112123 has 8 divisors (see below), whose sum is σ = 18471802075648. Its totient is φ = 6926925778344.

The previous prime is 12122120112101. The next prime is 12122120112187. The reversal of 12122120112123 is 32121102122121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12122120112123 - 2⁹ = 12122120111611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 577243814863 = 12122120112123 / (1 + 2 + 1 + 2 + 2 + 1 + 2 + 0 + 1 + 1 + 2 + 1 + 2 + 3).

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 12122120112123.

It is not an unprimeable number, because it can be changed into a prime (12122120112923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288621907411 + ... + 288621907452.

It is an arithmetic number, because the mean of its divisors is an integer number (2308975259456).

Almost surely, 2^{12122120112123} is an apocalyptic number.

12122120112123 is a deficient number, since it is larger than the sum of its proper divisors (6349681963525).

12122120112123 is an equidigital number, since it uses as much as digits as its factorization.

12122120112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577243814873.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12122120112123 its reverse (32121102122121), we get a palindrome (44243222234244).

The spelling of 12122120112123 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-three".