11220211 has 2 divisors, whose sum is σ = 11220212. Its totient is φ = 11220210.

The previous prime is 11220199. The next prime is 11220227. The reversal of 11220211 is 11202211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11220211 - 2⁵ = 11220179 is a prime.

It is not a weakly prime, because it can be changed into another prime (11220271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610105 + 5610106.

It is an arithmetic number, because the mean of its divisors is an integer number (5610106).

Almost surely, 2^11220211 is an apocalyptic number.

11220211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220211 is an equidigital number, since it uses as much as digits as its factorization.

11220211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 11220211 is about 3349.6583407864. The cubic root of 11220211 is about 223.8722898187.

Adding to 11220211 its reverse (11202211), we get a palindrome (22422422).

The spelling of 11220211 in words is "eleven million, two hundred twenty thousand, two hundred eleven".