1223320211 has 2 divisors, whose sum is σ = 1223320212. Its totient is φ = 1223320210.

The previous prime is 1223320207. The next prime is 1223320223. The reversal of 1223320211 is 1120233221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223320211 - 2² = 1223320207 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223320211.

It is not a weakly prime, because it can be changed into another prime (1223325211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611660105 + 611660106.

It is an arithmetic number, because the mean of its divisors is an integer number (611660106).

Almost surely, 2^1223320211 is an apocalyptic number.

1223320211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223320211 is an equidigital number, since it uses as much as digits as its factorization.

1223320211 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 17.

The square root of 1223320211 is about 34975.9947821359. The cubic root of 1223320211 is about 1069.4981811446.

Adding to 1223320211 its reverse (1120233221), we get a palindrome (2343553432).

The spelling of 1223320211 in words is "one billion, two hundred twenty-three million, three hundred twenty thousand, two hundred eleven".