201222211 has 2 divisors, whose sum is σ = 201222212. Its totient is φ = 201222210.

The previous prime is 201222191. The next prime is 201222223. The reversal of 201222211 is 112222102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201222211 - 2¹⁹ = 200697923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201222191 and 201222200.

It is not a weakly prime, because it can be changed into another prime (201222011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611105 + 100611106.

It is an arithmetic number, because the mean of its divisors is an integer number (100611106).

Almost surely, 2^201222211 is an apocalyptic number.

201222211 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222211 is an equidigital number, since it uses as much as digits as its factorization.

201222211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 201222211 is about 14185.2814917435. The cubic root of 201222211 is about 585.9923847861.

Adding to 201222211 its reverse (112222102), we get a palindrome (313444313).

The spelling of 201222211 in words is "two hundred one million, two hundred twenty-two thousand, two hundred eleven".