12130513123 has 4 divisors (see below), whose sum is σ = 12130999128. Its totient is φ = 12130027120.

The previous prime is 12130513069. The next prime is 12130513133. The reversal of 12130513123 is 32131503121.

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 12130513123 - 2¹³ = 12130504931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12130513094 and 12130513103.

It is not an unprimeable number, because it can be changed into a prime (12130513133) 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, 203413 + ... + 256198.

It is an arithmetic number, because the mean of its divisors is an integer number (3032749782).

Almost surely, 2^12130513123 is an apocalyptic number.

12130513123 is a deficient number, since it is larger than the sum of its proper divisors (486005).

12130513123 is an equidigital number, since it uses as much as digits as its factorization.

12130513123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486004.

The product of its (nonzero) digits is 540, while the sum is 22.

The spelling of 12130513123 in words is "twelve billion, one hundred thirty million, five hundred thirteen thousand, one hundred twenty-three".