123110221330543 has 4 divisors (see below), whose sum is σ = 123111233364168. Its totient is φ = 123109209296920.

The previous prime is 123110221330507. The next prime is 123110221330619. The reversal of 123110221330543 is 345033122011321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123110221330543 is a prime.

It is a super-2 number, since 2×123110221330543² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123110221330843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505834321 + ... + 506077642.

It is an arithmetic number, because the mean of its divisors is an integer number (30777808341042).

Almost surely, 2^{123110221330543} is an apocalyptic number.

123110221330543 is a deficient number, since it is larger than the sum of its proper divisors (1012033625).

123110221330543 is a wasteful number, since it uses less digits than its factorization.

123110221330543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012033624.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 123110221330543 its reverse (345033122011321), we get a palindrome (468143343341864).

The spelling of 123110221330543 in words is "one hundred twenty-three trillion, one hundred ten billion, two hundred twenty-one million, three hundred thirty thousand, five hundred forty-three".