11222209 has 2 divisors, whose sum is σ = 11222210. Its totient is φ = 11222208.

The previous prime is 11222201. The next prime is 11222219. The reversal of 11222209 is 90222211.

11222209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 199809 = 3320^2 + 447^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222209 - 2³ = 11222201 is a prime.

It is not a weakly prime, because it can be changed into another prime (11222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611104 + 5611105.

It is an arithmetic number, because the mean of its divisors is an integer number (5611105).

Almost surely, 2^11222209 is an apocalyptic number.

It is an amenable number.

11222209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222209 is an equidigital number, since it uses as much as digits as its factorization.

11222209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11222209 is about 3349.9565668826. The cubic root of 11222209 is about 223.8855774562.

The spelling of 11222209 in words is "eleven million, two hundred twenty-two thousand, two hundred nine".