123113320111211 has 4 divisors (see below), whose sum is σ = 125436212943552. Its totient is φ = 120790427278872.

The previous prime is 123113320111193. The next prime is 123113320111259. The reversal of 123113320111211 is 112111023311321.

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 123113320111211 - 2¹⁸ = 123113319849067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123113320119211) 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, 1161446416091 + ... + 1161446416196.

It is an arithmetic number, because the mean of its divisors is an integer number (31359053235888).

Almost surely, 2^{123113320111211} is an apocalyptic number.

123113320111211 is a deficient number, since it is larger than the sum of its proper divisors (2322892832341).

123113320111211 is an equidigital number, since it uses as much as digits as its factorization.

123113320111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322892832340.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 123113320111211 its reverse (112111023311321), we get a palindrome (235224343422532).

The spelling of 123113320111211 in words is "one hundred twenty-three trillion, one hundred thirteen billion, three hundred twenty million, one hundred eleven thousand, two hundred eleven".