1222202213 has 2 divisors, whose sum is σ = 1222202214. Its totient is φ = 1222202212.

The previous prime is 1222202209. The next prime is 1222202239. The reversal of 1222202213 is 3122022221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217800609 + 4401604 = 34897^2 + 2098^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222202213 - 2² = 1222202209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222202191 and 1222202200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222205213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611101106 + 611101107.

It is an arithmetic number, because the mean of its divisors is an integer number (611101107).

Almost surely, 2^1222202213 is an apocalyptic number.

It is an amenable number.

1222202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222202213 is an equidigital number, since it uses as much as digits as its factorization.

1222202213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1222202213 is about 34960.0087671614. The cubic root of 1222202213 is about 1069.1722753970.

Adding to 1222202213 its reverse (3122022221), we get a palindrome (4344224434).

The spelling of 1222202213 in words is "one billion, two hundred twenty-two million, two hundred two thousand, two hundred thirteen".