11222291 has 2 divisors, whose sum is σ = 11222292. Its totient is φ = 11222290.

The previous prime is 11222287. The next prime is 11222303. The reversal of 11222291 is 19222211.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19222211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11222291 - 2² = 11222287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11222201) 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, 5611145 + 5611146.

It is an arithmetic number, because the mean of its divisors is an integer number (5611146).

Almost surely, 2^11222291 is an apocalyptic number.

11222291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222291 is an equidigital number, since it uses as much as digits as its factorization.

11222291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

The square root of 11222291 is about 3349.9688058249. The cubic root of 11222291 is about 223.8861227610.

The spelling of 11222291 in words is "eleven million, two hundred twenty-two thousand, two hundred ninety-one".