123044220221311 has 4 divisors (see below), whose sum is σ = 123080335346592. Its totient is φ = 123008105096032.

The previous prime is 123044220221239. The next prime is 123044220221353. The reversal of 123044220221311 is 113122022440321.

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 123044220221311 - 2¹⁹ = 123044219697023 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 123044220221311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123044220221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18057557530 + ... + 18057564343.

It is an arithmetic number, because the mean of its divisors is an integer number (30770083836648).

Almost surely, 2^{123044220221311} is an apocalyptic number.

123044220221311 is a deficient number, since it is larger than the sum of its proper divisors (36115125281).

123044220221311 is an equidigital number, since it uses as much as digits as its factorization.

123044220221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36115125280.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 123044220221311 its reverse (113122022440321), we get a palindrome (236166242661632).

The spelling of 123044220221311 in words is "one hundred twenty-three trillion, forty-four billion, two hundred twenty million, two hundred twenty-one thousand, three hundred eleven".