12206401 has 2 divisors, whose sum is σ = 12206402. Its totient is φ = 12206400.

The previous prime is 12206393. The next prime is 12206423. The reversal of 12206401 is 10460221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10246401 + 1960000 = 3201^2 + 1400^2 .

It is an emirp because it is prime and its reverse (10460221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12206401 - 2³ = 12206393 is a prime.

It is not a weakly prime, because it can be changed into another prime (12206101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6103200 + 6103201.

It is an arithmetic number, because the mean of its divisors is an integer number (6103201).

Almost surely, 2^12206401 is an apocalyptic number.

It is an amenable number.

12206401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12206401 is an equidigital number, since it uses as much as digits as its factorization.

12206401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12206401 is about 3493.7660196413. The cubic root of 12206401 is about 230.2480059543.

Adding to 12206401 its reverse (10460221), we get a palindrome (22666622).

The spelling of 12206401 in words is "twelve million, two hundred six thousand, four hundred one".