123211103 has 4 divisors (see below), whose sum is σ = 123234000. Its totient is φ = 123188208.

The previous prime is 123211063. The next prime is 123211117. The reversal of 123211103 is 301112321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301112321 = 7951 ⋅37871.

It is a cyclic number.

It is not a de Polignac number, because 123211103 - 2⁸ = 123210847 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 (123211183) 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, 1523 + ... + 15771.

It is an arithmetic number, because the mean of its divisors is an integer number (30808500).

Almost surely, 2^123211103 is an apocalyptic number.

123211103 is a deficient number, since it is larger than the sum of its proper divisors (22897).

123211103 is an equidigital number, since it uses as much as digits as its factorization.

123211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22896.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123211103 is about 11100.0496845735. The cubic root of 123211103 is about 497.6033343427.

Adding to 123211103 its reverse (301112321), we get a palindrome (424323424).

The spelling of 123211103 in words is "one hundred twenty-three million, two hundred eleven thousand, one hundred three".