11132221 has 2 divisors, whose sum is σ = 11132222. Its totient is φ = 11132220.

The previous prime is 11132213. The next prime is 11132239. The reversal of 11132221 is 12223111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9211225 + 1920996 = 3035^2 + 1386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11132221 - 2³ = 11132213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11132291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566110 + 5566111.

It is an arithmetic number, because the mean of its divisors is an integer number (5566111).

Almost surely, 2^11132221 is an apocalyptic number.

It is an amenable number.

11132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11132221 is an equidigital number, since it uses as much as digits as its factorization.

11132221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 13.

The square root of 11132221 is about 3336.4983141012. The cubic root of 11132221 is about 223.2855438450.

Adding to 11132221 its reverse (12223111), we get a palindrome (23355332).

The spelling of 11132221 in words is "eleven million, one hundred thirty-two thousand, two hundred twenty-one".