123452320123111 has 4 divisors (see below), whose sum is σ = 141088365854992. Its totient is φ = 105816274391232.

The previous prime is 123452320123109. The next prime is 123452320123151. The reversal of 123452320123111 is 111321023254321.

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 123452320123111 - 2¹ = 123452320123109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123452320123151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8818022865930 + ... + 8818022865943.

It is an arithmetic number, because the mean of its divisors is an integer number (35272091463748).

Almost surely, 2^{123452320123111} is an apocalyptic number.

123452320123111 is a deficient number, since it is larger than the sum of its proper divisors (17636045731881).

123452320123111 is an equidigital number, since it uses as much as digits as its factorization.

123452320123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17636045731880.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 123452320123111 its reverse (111321023254321), we get a palindrome (234773343377432).

The spelling of 123452320123111 in words is "one hundred twenty-three trillion, four hundred fifty-two billion, three hundred twenty million, one hundred twenty-three thousand, one hundred eleven".