11196221 has 2 divisors, whose sum is σ = 11196222. Its totient is φ = 11196220.

The previous prime is 11196209. The next prime is 11196223. The reversal of 11196221 is 12269111.

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., 10725625 + 470596 = 3275^2 + 686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11196221 is a prime.

It is a Sophie Germain prime.

Together with 11196223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11196223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5598110 + 5598111.

It is an arithmetic number, because the mean of its divisors is an integer number (5598111).

Almost surely, 2^11196221 is an apocalyptic number.

It is an amenable number.

11196221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11196221 is an equidigital number, since it uses as much as digits as its factorization.

11196221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 23.

The square root of 11196221 is about 3346.0754623887. The cubic root of 11196221 is about 223.7126217432.

The spelling of 11196221 in words is "eleven million, one hundred ninety-six thousand, two hundred twenty-one".