2216622509 has 2 divisors, whose sum is σ = 2216622510. Its totient is φ = 2216622508.

The previous prime is 2216622497. The next prime is 2216622547. The reversal of 2216622509 is 9052266122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1202008900 + 1014613609 = 34670^2 + 31853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216622509 - 2⁸ = 2216622253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216622559) 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, 1108311254 + 1108311255.

It is an arithmetic number, because the mean of its divisors is an integer number (1108311255).

Almost surely, 2^2216622509 is an apocalyptic number.

It is an amenable number.

2216622509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216622509 is an equidigital number, since it uses as much as digits as its factorization.

2216622509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2216622509 is about 47081.0206877464. The cubic root of 2216622509 is about 1303.8588516113.

The spelling of 2216622509 in words is "two billion, two hundred sixteen million, six hundred twenty-two thousand, five hundred nine".