2252216209 has 2 divisors, whose sum is σ = 2252216210. Its totient is φ = 2252216208.

The previous prime is 2252216179. The next prime is 2252216237. The reversal of 2252216209 is 9026122522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2237006209 + 15210000 = 47297^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 2252216209 - 2⁵ = 2252216177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2252216249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126108104 + 1126108105.

It is an arithmetic number, because the mean of its divisors is an integer number (1126108105).

Almost surely, 2^2252216209 is an apocalyptic number.

It is an amenable number.

2252216209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2252216209 is an equidigital number, since it uses as much as digits as its factorization.

2252216209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2252216209 is about 47457.5200468798. The cubic root of 2252216209 is about 1310.8007863449.

The spelling of 2252216209 in words is "two billion, two hundred fifty-two million, two hundred sixteen thousand, two hundred nine".