2120112022123 has 4 divisors (see below), whose sum is σ = 2120271071688. Its totient is φ = 2119952972560.

The previous prime is 2120112022027. The next prime is 2120112022169. The reversal of 2120112022123 is 3212202110212.

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 2120112022123 - 2⁹ = 2120112021611 is a prime.

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 2120112022123.

It is not an unprimeable number, because it can be changed into a prime (2120113022123) 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 in 3 ways as a sum of consecutive naturals, for example, 79504786 + ... + 79531447.

It is an arithmetic number, because the mean of its divisors is an integer number (530067767922).

Almost surely, 2^{2120112022123} is an apocalyptic number.

2120112022123 is a deficient number, since it is larger than the sum of its proper divisors (159049565).

2120112022123 is a wasteful number, since it uses less digits than its factorization.

2120112022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159049564.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2120112022123 its reverse (3212202110212), we get a palindrome (5332314132335).

The spelling of 2120112022123 in words is "two trillion, one hundred twenty billion, one hundred twelve million, twenty-two thousand, one hundred twenty-three".