12125413361 has 4 divisors (see below), whose sum is σ = 12128200692. Its totient is φ = 12122626032.

The previous prime is 12125413343. The next prime is 12125413403. The reversal of 12125413361 is 16331452121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16331452121 = 227 ⋅71944723.

It can be written as a sum of positive squares in 2 ways, for example, as 9953853361 + 2171560000 = 99769^2 + 46600^2 .

It is a cyclic number.

It is not a de Polignac number, because 12125413361 - 2¹⁰ = 12125412337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12125433361) 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, 1387130 + ... + 1395843.

It is an arithmetic number, because the mean of its divisors is an integer number (3032050173).

Almost surely, 2^12125413361 is an apocalyptic number.

It is an amenable number.

12125413361 is a deficient number, since it is larger than the sum of its proper divisors (2787331).

12125413361 is an equidigital number, since it uses as much as digits as its factorization.

12125413361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787330.

The product of its digits is 4320, while the sum is 29.

Adding to 12125413361 its reverse (16331452121), we get a palindrome (28456865482).

The spelling of 12125413361 in words is "twelve billion, one hundred twenty-five million, four hundred thirteen thousand, three hundred sixty-one".