12125313213 has 96 divisors (see below), whose sum is σ = 18864714624. Its totient is φ = 6883024896.

The previous prime is 12125313181. The next prime is 12125313251. The reversal of 12125313213 is 31231352121.

It is a happy number.

It is not a de Polignac number, because 12125313213 - 2⁵ = 12125313181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125313113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 125003181 + ... + 125003277.

It is an arithmetic number, because the mean of its divisors is an integer number (196507444).

Almost surely, 2^12125313213 is an apocalyptic number.

12125313213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12125313213 is a deficient number, since it is larger than the sum of its proper divisors (6739401411).

12125313213 is a wasteful number, since it uses less digits than its factorization.

12125313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 292 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

Adding to 12125313213 its reverse (31231352121), we get a palindrome (43356665334).

The spelling of 12125313213 in words is "twelve billion, one hundred twenty-five million, three hundred thirteen thousand, two hundred thirteen".