12123110103 has 16 divisors (see below), whose sum is σ = 17449111680. Its totient is φ = 7442560224.

The previous prime is 12123110101. The next prime is 12123110177. The reversal of 12123110103 is 30101132121.

It is a happy number.

It is not a de Polignac number, because 12123110103 - 2¹ = 12123110101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123110101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354601 + ... + 387282.

It is an arithmetic number, because the mean of its divisors is an integer number (1090569480).

Almost surely, 2^12123110103 is an apocalyptic number.

12123110103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12123110103 is a deficient number, since it is larger than the sum of its proper divisors (5326001577).

12123110103 is a wasteful number, since it uses less digits than its factorization.

12123110103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742318.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12123110103 its reverse (30101132121), we get a palindrome (42224242224).

The spelling of 12123110103 in words is "twelve billion, one hundred twenty-three million, one hundred ten thousand, one hundred three".