12103110123 has 16 divisors (see below), whose sum is σ = 17495469600. Its totient is φ = 7398077184.

The previous prime is 12103110121. The next prime is 12103110161. The reversal of 12103110123 is 32101130121.

It is a happy number.

It is not a de Polignac number, because 12103110123 - 2¹ = 12103110121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12103110121) 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, 1035586 + ... + 1047207.

It is an arithmetic number, because the mean of its divisors is an integer number (1093466850).

Almost surely, 2^12103110123 is an apocalyptic number.

12103110123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12103110123 is a deficient number, since it is larger than the sum of its proper divisors (5392359477).

12103110123 is a wasteful number, since it uses less digits than its factorization.

12103110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082958.

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

Adding to 12103110123 its reverse (32101130121), we get a palindrome (44204240244).

The spelling of 12103110123 in words is "twelve billion, one hundred three million, one hundred ten thousand, one hundred twenty-three".