11371121 has 2 divisors, whose sum is σ = 11371122. Its totient is φ = 11371120.

The previous prime is 11371109. The next prime is 11371123. The reversal of 11371121 is 12117311.

11371121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10080625 + 1290496 = 3175^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 11371121 - 2⁶ = 11371057 is a prime.

Together with 11371123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11371121.

It is not a weakly prime, because it can be changed into another prime (11371123) 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, 5685560 + 5685561.

It is an arithmetic number, because the mean of its divisors is an integer number (5685561).

Almost surely, 2^11371121 is an apocalyptic number.

It is an amenable number.

11371121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11371121 is an equidigital number, since it uses as much as digits as its factorization.

11371121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 17.

The square root of 11371121 is about 3372.1092805542. The cubic root of 11371121 is about 224.8715052330.

Adding to 11371121 its reverse (12117311), we get a palindrome (23488432).

The spelling of 11371121 in words is "eleven million, three hundred seventy-one thousand, one hundred twenty-one".