1202222009 has 2 divisors, whose sum is σ = 1202222010. Its totient is φ = 1202222008.

The previous prime is 1202222003. The next prime is 1202222011. The reversal of 1202222009 is 9002222021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115359609 + 86862400 = 33397^2 + 9320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202222009 is a prime.

It is a Sophie Germain prime.

Together with 1202222011, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1202222003) 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, 601111004 + 601111005.

It is an arithmetic number, because the mean of its divisors is an integer number (601111005).

Almost surely, 2^1202222009 is an apocalyptic number.

It is an amenable number.

1202222009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202222009 is an equidigital number, since it uses as much as digits as its factorization.

1202222009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1202222009 is about 34673.0732557701. The cubic root of 1202222009 is about 1063.3140639016.

The spelling of 1202222009 in words is "one billion, two hundred two million, two hundred twenty-two thousand, nine".