12130123442123 has 4 divisors (see below), whose sum is σ = 12166117874040. Its totient is φ = 12094129010208.

The previous prime is 12130123442089. The next prime is 12130123442137. The reversal of 12130123442123 is 32124432103121.

It is a happy number.

12130123442123 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 not a de Polignac number, because 12130123442123 - 2²² = 12130119247819 is a prime.

It is a super-2 number, since 2×12130123442123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130123442183) 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, 17997215453 + ... + 17997216126.

It is an arithmetic number, because the mean of its divisors is an integer number (3041529468510).

Almost surely, 2^{12130123442123} is an apocalyptic number.

12130123442123 is a deficient number, since it is larger than the sum of its proper divisors (35994431917).

12130123442123 is an equidigital number, since it uses as much as digits as its factorization.

12130123442123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35994431916.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 12130123442123 its reverse (32124432103121), we get a palindrome (44254555545244).

The spelling of 12130123442123 in words is "twelve trillion, one hundred thirty billion, one hundred twenty-three million, four hundred forty-two thousand, one hundred twenty-three".