123121044321311 has 8 divisors (see below), whose sum is σ = 127374939547200. Its totient is φ = 118867705227040.

The previous prime is 123121044321287. The next prime is 123121044321329. The reversal of 123121044321311 is 113123440121321.

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

It is a cyclic number.

It is not a de Polignac number, because 123121044321311 - 2¹⁴ = 123121044304927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121044321391) 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, 138582455 + ... + 139468056.

It is an arithmetic number, because the mean of its divisors is an integer number (15921867443400).

Almost surely, 2^{123121044321311} is an apocalyptic number.

123121044321311 is a deficient number, since it is larger than the sum of its proper divisors (4253895225889).

123121044321311 is a wasteful number, since it uses less digits than its factorization.

123121044321311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278065809.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 123121044321311 its reverse (113123440121321), we get a palindrome (236244484442632).

The spelling of 123121044321311 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, forty-four million, three hundred twenty-one thousand, three hundred eleven".