12101110123 has 4 divisors (see below), whose sum is σ = 12102059448. Its totient is φ = 12100160800.

The previous prime is 12101110039. The next prime is 12101110207. The reversal of 12101110123 is 32101110121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12101110039) and next prime (12101110207).

It is a cyclic number.

It is not a de Polignac number, because 12101110123 - 2¹³ = 12101101931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101119123) 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, 455278 + ... + 481123.

It is an arithmetic number, because the mean of its divisors is an integer number (3025514862).

Almost surely, 2^12101110123 is an apocalyptic number.

12101110123 is a deficient number, since it is larger than the sum of its proper divisors (949325).

12101110123 is an equidigital number, since it uses as much as digits as its factorization.

12101110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949324.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12101110123 its reverse (32101110121), we get a palindrome (44202220244).

The spelling of 12101110123 in words is "twelve billion, one hundred one million, one hundred ten thousand, one hundred twenty-three".