12056321 has 2 divisors, whose sum is σ = 12056322. Its totient is φ = 12056320.

The previous prime is 12056287. The next prime is 12056327. The reversal of 12056321 is 12365021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9985600 + 2070721 = 3160^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12056321 - 2¹⁰ = 12055297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12056293 and 12056302.

It is not a weakly prime, because it can be changed into another prime (12056327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6028160 + 6028161.

It is an arithmetic number, because the mean of its divisors is an integer number (6028161).

Almost surely, 2^12056321 is an apocalyptic number.

It is an amenable number.

12056321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12056321 is an equidigital number, since it uses as much as digits as its factorization.

12056321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12056321 is about 3472.2213351110. The cubic root of 12056321 is about 229.3004643398.

The spelling of 12056321 in words is "twelve million, fifty-six thousand, three hundred twenty-one".