12321125 has 16 divisors (see below), whose sum is σ = 15478320. Its totient is φ = 9792000.

The previous prime is 12321121. The next prime is 12321131. The reversal of 12321125 is 52112321.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 638401 + 11682724 = 799^2 + 3418^2 .

It is not a de Polignac number, because 12321125 - 2² = 12321121 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 (12321121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29921 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (967395).

Almost surely, 2^12321125 is an apocalyptic number.

It is an amenable number.

12321125 is a deficient number, since it is larger than the sum of its proper divisors (3157195).

12321125 is an equidigital number, since it uses as much as digits as its factorization.

12321125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 655 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 12321125 is about 3510.1460083592. The cubic root of 12321125 is about 230.9670998789.

Adding to 12321125 its reverse (52112321), we get a palindrome (64433446).

The spelling of 12321125 in words is "twelve million, three hundred twenty-one thousand, one hundred twenty-five".