1123222211 has 2 divisors, whose sum is σ = 1123222212. Its totient is φ = 1123222210.

The previous prime is 1123222207. The next prime is 1123222223. The reversal of 1123222211 is 1122223211.

It is a weak prime.

It is an emirp because it is prime and its reverse (1122223211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123222211 - 2² = 1123222207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1123222211.

It is not a weakly prime, because it can be changed into another prime (1123222271) 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, 561611105 + 561611106.

It is an arithmetic number, because the mean of its divisors is an integer number (561611106).

Almost surely, 2^1123222211 is an apocalyptic number.

1123222211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123222211 is an equidigital number, since it uses as much as digits as its factorization.

1123222211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 1123222211 is about 33514.5074706462. The cubic root of 1123222211 is about 1039.4937782289.

Adding to 1123222211 its reverse (1122223211), we get a palindrome (2245445422).

The spelling of 1123222211 in words is "one billion, one hundred twenty-three million, two hundred twenty-two thousand, two hundred eleven".