12130213123 has 4 divisors (see below), whose sum is σ = 13863100720. Its totient is φ = 10397325528.

The previous prime is 12130213093. The next prime is 12130213141. The reversal of 12130213123 is 32131203121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32131203121 = 41 ⋅783687881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12130213123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12130213123.

It is not an unprimeable number, because it can be changed into a prime (12130213523) 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, 866443788 + ... + 866443801.

It is an arithmetic number, because the mean of its divisors is an integer number (3465775180).

Almost surely, 2^12130213123 is an apocalyptic number.

12130213123 is a deficient number, since it is larger than the sum of its proper divisors (1732887597).

12130213123 is an equidigital number, since it uses as much as digits as its factorization.

12130213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732887596.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12130213123 its reverse (32131203121), we get a palindrome (44261416244).

The spelling of 12130213123 in words is "twelve billion, one hundred thirty million, two hundred thirteen thousand, one hundred twenty-three".