12111100112123 has 16 divisors (see below), whose sum is σ = 12415346616960. Its totient is φ = 11808877470336.

The previous prime is 12111100112099. The next prime is 12111100112173. The reversal of 12111100112123 is 32121100111121.

It is a cyclic number.

It is not a de Polignac number, because 12111100112123 - 2²⁶ = 12111033003259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111100112173) 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, 12870665 + ... + 13779557.

It is an arithmetic number, because the mean of its divisors is an integer number (775959163560).

Almost surely, 2^{12111100112123} is an apocalyptic number.

12111100112123 is a deficient number, since it is larger than the sum of its proper divisors (304246504837).

12111100112123 is an equidigital number, since it uses as much as digits as its factorization.

12111100112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910006.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12111100112123 its reverse (32121100111121), we get a palindrome (44232200223244).

The spelling of 12111100112123 in words is "twelve trillion, one hundred eleven billion, one hundred million, one hundred twelve thousand, one hundred twenty-three".