12213134125 has 16 divisors (see below), whose sum is σ = 15596463168. Its totient is φ = 9543282000.

The previous prime is 12213134117. The next prime is 12213134137. The reversal of 12213134125 is 52143131221.

It is not a de Polignac number, because 12213134125 - 2³ = 12213134117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12213134125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1130731 + ... + 1141480.

It is an arithmetic number, because the mean of its divisors is an integer number (974778948).

Almost surely, 2^12213134125 is an apocalyptic number.

It is an amenable number.

12213134125 is a deficient number, since it is larger than the sum of its proper divisors (3383329043).

12213134125 is an equidigital number, since it uses as much as digits as its factorization.

12213134125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272269 (or 2272259 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

Adding to 12213134125 its reverse (52143131221), we get a palindrome (64356265346).

The spelling of 12213134125 in words is "twelve billion, two hundred thirteen million, one hundred thirty-four thousand, one hundred twenty-five".