123223220311321 has 16 divisors (see below), whose sum is σ = 134954709321600. Its totient is φ = 111813659682048.

The previous prime is 123223220311277. The next prime is 123223220311339. The reversal of 123223220311321 is 123113022322321.

It is not a de Polignac number, because 123223220311321 - 2²⁷ = 123223086093593 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 123223220311321.

It is not an unprimeable number, because it can be changed into a prime (123223220318321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26932545 + ... + 31173841.

It is an arithmetic number, because the mean of its divisors is an integer number (8434669332600).

Almost surely, 2^{123223220311321} is an apocalyptic number.

It is an amenable number.

123223220311321 is a deficient number, since it is larger than the sum of its proper divisors (11731489010279).

123223220311321 is a wasteful number, since it uses less digits than its factorization.

123223220311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279248.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 123223220311321 its reverse (123113022322321), we get a palindrome (246336242633642).

The spelling of 123223220311321 in words is "one hundred twenty-three trillion, two hundred twenty-three billion, two hundred twenty million, three hundred eleven thousand, three hundred twenty-one".