123110211310211 has 4 divisors (see below), whose sum is σ = 123110257694424. Its totient is φ = 123110164926000.

The previous prime is 123110211310199. The next prime is 123110211310243. The reversal of 123110211310211 is 112013112011321.

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 123110211310211 - 2¹⁰ = 123110211309187 is a prime.

It is a super-2 number, since 2×123110211310211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123110211310111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18952565 + ... + 24605286.

It is an arithmetic number, because the mean of its divisors is an integer number (30777564423606).

Almost surely, 2^{123110211310211} is an apocalyptic number.

123110211310211 is a deficient number, since it is larger than the sum of its proper divisors (46384213).

123110211310211 is an equidigital number, since it uses as much as digits as its factorization.

123110211310211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46384212.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 123110211310211 its reverse (112013112011321), we get a palindrome (235123323321532).

The spelling of 123110211310211 in words is "one hundred twenty-three trillion, one hundred ten billion, two hundred eleven million, three hundred ten thousand, two hundred eleven".