12250321 has 2 divisors, whose sum is σ = 12250322. Its totient is φ = 12250320.

The previous prime is 12250309. The next prime is 12250327. The reversal of 12250321 is 12305221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 2359296 = 3145^2 + 1536^2 .

It is an emirp because it is prime and its reverse (12305221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12250321 - 2²³ = 3861713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12250295 and 12250304.

It is not a weakly prime, because it can be changed into another prime (12250327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125160 + 6125161.

It is an arithmetic number, because the mean of its divisors is an integer number (6125161).

Almost surely, 2^12250321 is an apocalyptic number.

It is an amenable number.

12250321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12250321 is an equidigital number, since it uses as much as digits as its factorization.

12250321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12250321 is about 3500.0458568425. The cubic root of 12250321 is about 230.5238281228.

Adding to 12250321 its reverse (12305221), we get a palindrome (24555542).

The spelling of 12250321 in words is "twelve million, two hundred fifty thousand, three hundred twenty-one".