11514221 has 2 divisors, whose sum is σ = 11514222. Its totient is φ = 11514220.

The previous prime is 11514211. The next prime is 11514227. The reversal of 11514221 is 12241511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 28900 = 3389^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11514221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11514221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11514227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757110 + 5757111.

It is an arithmetic number, because the mean of its divisors is an integer number (5757111).

Almost surely, 2^11514221 is an apocalyptic number.

It is an amenable number.

11514221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11514221 is an equidigital number, since it uses as much as digits as its factorization.

11514221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80, while the sum is 17.

The square root of 11514221 is about 3393.2611158000. The cubic root of 11514221 is about 225.8108750090.

Adding to 11514221 its reverse (12241511), we get a palindrome (23755732).

The spelling of 11514221 in words is "eleven million, five hundred fourteen thousand, two hundred twenty-one".