2217249109 has 2 divisors, whose sum is σ = 2217249110. Its totient is φ = 2217249108.

The previous prime is 2217249077. The next prime is 2217249163. The reversal of 2217249109 is 9019427122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1929844900 + 287404209 = 43930^2 + 16953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217249109 - 2⁵ = 2217249077 is a prime.

It is a super-2 number, since 2×2217249109² = 9832387222722587762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2217249809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108624554 + 1108624555.

It is an arithmetic number, because the mean of its divisors is an integer number (1108624555).

Almost surely, 2^2217249109 is an apocalyptic number.

It is an amenable number.

2217249109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217249109 is an equidigital number, since it uses as much as digits as its factorization.

2217249109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2217249109 is about 47087.6747036844. The cubic root of 2217249109 is about 1303.9816993194.

The spelling of 2217249109 in words is "two billion, two hundred seventeen million, two hundred forty-nine thousand, one hundred nine".