12001361 has 2 divisors, whose sum is σ = 12001362. Its totient is φ = 12001360.

The previous prime is 12001349. The next prime is 12001387. The reversal of 12001361 is 16310021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11182336 + 819025 = 3344^2 + 905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001361 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12001261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000680 + 6000681.

It is an arithmetic number, because the mean of its divisors is an integer number (6000681).

Almost surely, 2^12001361 is an apocalyptic number.

It is an amenable number.

12001361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001361 is an equidigital number, since it uses as much as digits as its factorization.

12001361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 12001361 is about 3464.2980529972. The cubic root of 12001361 is about 228.9515034950.

Adding to 12001361 its reverse (16310021), we get a palindrome (28311382).

The spelling of 12001361 in words is "twelve million, one thousand, three hundred sixty-one".