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BaseRepresentation
bin11000001110001
3122000022
43001301
5344101
6133225
751104
oct30161
918008
1012401
119354
127215
13584c
14473b
153a1b
hex3071

12401 has 2 divisors, whose sum is σ = 12402. Its totient is φ = 12400.

The previous prime is 12391. The next prime is 12409. The reversal of 12401 is 10421.

It is an a-pointer prime, because the next prime (12409) can be obtained adding 12401 to its sum of digits (8).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10000 + 2401 = 100^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200 + 6201.

It is an arithmetic number, because the mean of its divisors is an integer number (6201).

212401 is an apocalyptic number.

It is an amenable number.

12401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401 is an equidigital number, since it uses as much as digits as its factorization.

12401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 12401 is about 111.3597772986. The cubic root of 12401 is about 23.1465127299.

Adding to 12401 its reverse (10421), we get a palindrome (22822).

The spelling of 12401 in words is "twelve thousand, four hundred one", and thus it is an iban number.