11424121 has 2 divisors, whose sum is σ = 11424122. Its totient is φ = 11424120.

The previous prime is 11424109. The next prime is 11424131. The reversal of 11424121 is 12142411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 1254400 = 3189^2 + 1120^2 .

It is an emirp because it is prime and its reverse (12142411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11424121 - 2²¹ = 9326969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11424095 and 11424104.

It is not a weakly prime, because it can be changed into another prime (11424131) 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, 5712060 + 5712061.

It is an arithmetic number, because the mean of its divisors is an integer number (5712061).

Almost surely, 2^11424121 is an apocalyptic number.

It is an amenable number.

11424121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11424121 is an equidigital number, since it uses as much as digits as its factorization.

11424121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 16.

The square root of 11424121 is about 3379.9587275587. The cubic root of 11424121 is about 225.2203339591.

Adding to 11424121 its reverse (12142411), we get a palindrome (23566532).

The spelling of 11424121 in words is "eleven million, four hundred twenty-four thousand, one hundred twenty-one".