11122229 has 2 divisors, whose sum is σ = 11122230. Its totient is φ = 11122228.

The previous prime is 11122219. The next prime is 11122247. The reversal of 11122229 is 92222111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 4 = 3335^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122229 - 2¹⁶ = 11056693 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11122229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122219) 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, 5561114 + 5561115.

It is an arithmetic number, because the mean of its divisors is an integer number (5561115).

Almost surely, 2^11122229 is an apocalyptic number.

It is an amenable number.

11122229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122229 is an equidigital number, since it uses as much as digits as its factorization.

11122229 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 11122229 is about 3335.0005997001. Note that the first 3 decimals coincide. The cubic root of 11122229 is about 223.2187186954.

The spelling of 11122229 in words is "eleven million, one hundred twenty-two thousand, two hundred twenty-nine".