2216752209 has 18 divisors (see below), whose sum is σ = 3724747650. Its totient is φ = 1266715296.

The previous prime is 2216752183. The next prime is 2216752217. The reversal of 2216752209 is 9022576122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1215219600 + 1001532609 = 34860^2 + 31647^2 .

It is not a de Polignac number, because 2216752209 - 2⁷ = 2216752081 is a prime.

It is a super-2 number, since 2×2216752209² = 9827980712212759362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2216752229) 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 in 17 ways as a sum of consecutive naturals, for example, 2512884 + ... + 2513765.

It is an arithmetic number, because the mean of its divisors is an integer number (206930425).

Almost surely, 2^2216752209 is an apocalyptic number.

It is an amenable number.

2216752209 is a deficient number, since it is larger than the sum of its proper divisors (1507995441).

2216752209 is a wasteful number, since it uses less digits than its factorization.

2216752209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026669 (or 5026659 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2216752209 is about 47082.3980803867. The cubic root of 2216752209 is about 1303.8842817713.

The spelling of 2216752209 in words is "two billion, two hundred sixteen million, seven hundred fifty-two thousand, two hundred nine".