12123102320111 has 4 divisors (see below), whose sum is σ = 12176508057432. Its totient is φ = 12069696582792.

The previous prime is 12123102320099. The next prime is 12123102320143. The reversal of 12123102320111 is 11102320132121.

12123102320111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12123102320111 is a prime.

It is a super-2 number, since 2×12123102320111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123102320411) 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, 26702868320 + ... + 26702868773.

It is an arithmetic number, because the mean of its divisors is an integer number (3044127014358).

Almost surely, 2^{12123102320111} is an apocalyptic number.

12123102320111 is a deficient number, since it is larger than the sum of its proper divisors (53405737321).

12123102320111 is an equidigital number, since it uses as much as digits as its factorization.

12123102320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53405737320.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12123102320111 its reverse (11102320132121), we get a palindrome (23225422452232).

The spelling of 12123102320111 in words is "twelve trillion, one hundred twenty-three billion, one hundred two million, three hundred twenty thousand, one hundred eleven".