123110211223 has 4 divisors (see below), whose sum is σ = 123141871120. Its totient is φ = 123078551328.

The previous prime is 123110211173. The next prime is 123110211229. The reversal of 123110211223 is 322112011321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322112011321 = 283 ⋅1138204987.

It is a cyclic number.

It is not a de Polignac number, because 123110211223 - 2¹⁷ = 123110080151 is a prime.

It is a super-2 number, since 2×123110211223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123110211223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123110211229) 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, 15824115 + ... + 15831892.

It is an arithmetic number, because the mean of its divisors is an integer number (30785467780).

Almost surely, 2^123110211223 is an apocalyptic number.

123110211223 is a deficient number, since it is larger than the sum of its proper divisors (31659897).

123110211223 is an equidigital number, since it uses as much as digits as its factorization.

123110211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31659896.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123110211223 its reverse (322112011321), we get a palindrome (445222222544).

The spelling of 123110211223 in words is "one hundred twenty-three billion, one hundred ten million, two hundred eleven thousand, two hundred twenty-three".