1222111207 has 2 divisors, whose sum is σ = 1222111208. Its totient is φ = 1222111206.

The previous prime is 1222111201. The next prime is 1222111273. The reversal of 1222111207 is 7021112221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222111207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222111201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611055603 + 611055604.

It is an arithmetic number, because the mean of its divisors is an integer number (611055604).

Almost surely, 2^1222111207 is an apocalyptic number.

1222111207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222111207 is an equidigital number, since it uses as much as digits as its factorization.

1222111207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1222111207 is about 34958.7071700313. The cubic root of 1222111207 is about 1069.1457376424.

Adding to 1222111207 its reverse (7021112221), we get a palindrome (8243223428).

The spelling of 1222111207 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred seven".