Search a number
-
+
13201121 is a prime number
BaseRepresentation
bin110010010110…
…111011100001
3220211200112102
4302112323201
511334413441
61150540145
7220131143
oct62267341
926750472
1013201121
1174a721a
124507655
13297291b
141a78c93
15125b69b
hexc96ee1

13201121 has 2 divisors, whose sum is σ = 13201122. Its totient is φ = 13201120.

The previous prime is 13201117. The next prime is 13201127. The reversal of 13201121 is 12110231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 96721 = 3620^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 13201121 - 22 = 13201117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13201127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600560 + 6600561.

It is an arithmetic number, because the mean of its divisors is an integer number (6600561).

Almost surely, 213201121 is an apocalyptic number.

It is an amenable number.

13201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13201121 is an equidigital number, since it uses as much as digits as its factorization.

13201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 13201121 is about 3633.3346941893. The cubic root of 13201121 is about 236.3398400420.

Adding to 13201121 its reverse (12110231), we get a palindrome (25311352).

The spelling of 13201121 in words is "thirteen million, two hundred one thousand, one hundred twenty-one".