12123130133 has 4 divisors (see below), whose sum is σ = 12381069120. Its totient is φ = 11865191148.

The previous prime is 12123130087. The next prime is 12123130163. The reversal of 12123130133 is 33103132121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33103132121 = 179 ⋅184933699.

It is a cyclic number.

It is not a de Polignac number, because 12123130133 - 2⁶ = 12123130069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123130163) 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, 128969423 + ... + 128969516.

It is an arithmetic number, because the mean of its divisors is an integer number (3095267280).

Almost surely, 2^12123130133 is an apocalyptic number.

It is an amenable number.

12123130133 is a deficient number, since it is larger than the sum of its proper divisors (257938987).

12123130133 is an equidigital number, since it uses as much as digits as its factorization.

12123130133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257938986.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12123130133 its reverse (33103132121), we get a palindrome (45226262254).

The spelling of 12123130133 in words is "twelve billion, one hundred twenty-three million, one hundred thirty thousand, one hundred thirty-three".