13716121 has 2 divisors, whose sum is σ = 13716122. Its totient is φ = 13716120.

The previous prime is 13716107. The next prime is 13716149. The reversal of 13716121 is 12161731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 1290496 = 3525^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 13716121 - 2⁵ = 13716089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13716092 and 13716101.

It is not a weakly prime, because it can be changed into another prime (13716821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6858060 + 6858061.

It is an arithmetic number, because the mean of its divisors is an integer number (6858061).

Almost surely, 2^13716121 is an apocalyptic number.

It is an amenable number.

13716121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13716121 is an equidigital number, since it uses as much as digits as its factorization.

13716121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 22.

The square root of 13716121 is about 3703.5281826928. The cubic root of 13716121 is about 239.3740691949.

Adding to 13716121 its reverse (12161731), we get a palindrome (25877852).

The spelling of 13716121 in words is "thirteen million, seven hundred sixteen thousand, one hundred twenty-one".