1222205071 has 2 divisors, whose sum is σ = 1222205072. Its totient is φ = 1222205070.

The previous prime is 1222205063. The next prime is 1222205099. The reversal of 1222205071 is 1705022221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222205071 - 2³ = 1222205063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222205011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611102535 + 611102536.

It is an arithmetic number, because the mean of its divisors is an integer number (611102536).

Almost surely, 2^1222205071 is an apocalyptic number.

1222205071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222205071 is an equidigital number, since it uses as much as digits as its factorization.

1222205071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1222205071 is about 34960.0496424133. The cubic root of 1222205071 is about 1069.1731087812.

Adding to 1222205071 its reverse (1705022221), we get a palindrome (2927227292).

The spelling of 1222205071 in words is "one billion, two hundred twenty-two million, two hundred five thousand, seventy-one".