1222321211 has 2 divisors, whose sum is σ = 1222321212. Its totient is φ = 1222321210.

The previous prime is 1222321201. The next prime is 1222321213. The reversal of 1222321211 is 1121232221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222321211 is a prime.

Together with 1222321213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222321211.

It is not a weakly prime, because it can be changed into another prime (1222321213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611160605 + 611160606.

It is an arithmetic number, because the mean of its divisors is an integer number (611160606).

Almost surely, 2^1222321211 is an apocalyptic number.

1222321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222321211 is an equidigital number, since it uses as much as digits as its factorization.

1222321211 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 1222321211 is about 34961.7106417864. The cubic root of 1222321211 is about 1069.2069737560.

Adding to 1222321211 its reverse (1121232221), we get a palindrome (2343553432).

The spelling of 1222321211 in words is "one billion, two hundred twenty-two million, three hundred twenty-one thousand, two hundred eleven".