11222201 has 2 divisors, whose sum is σ = 11222202.
Its totient is φ = 11222200.
The previous prime is 11222177. The next prime is 11222209. The reversal of 11222201 is 10222211.
Adding to 11222201 its reverse (10222211), we get a palindrome (21444412).
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., 11215801 + 6400 = 3349^2 + 80^2
It is an emirp because it is prime and its reverse (10222211) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-11222201 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (11222209) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611100 + 5611101.
It is an arithmetic number, because the mean of its divisors is an integer number (5611101).
Almost surely, 211222201 is an apocalyptic number.
It is an amenable number.
11222201 is a deficient number, since it is larger than the sum of its proper divisors (1).
11222201 is an equidigital number, since it uses as much as digits as its factorization.
11222201 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 11222201 is about 3349.9553728371.
The cubic root of 11222201 is about 223.8855242556.
The spelling of 11222201 in words is "eleven million, two hundred twenty-two thousand, two hundred one".