2216696281 has 2 divisors, whose sum is σ = 2216696282. Its totient is φ = 2216696280.

The previous prime is 2216696243. The next prime is 2216696309. The reversal of 2216696281 is 1826966122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1643572681 + 573123600 = 40541^2 + 23940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216696281 - 2¹⁵ = 2216663513 is a prime.

It is a super-2 number, since 2×2216696281² = 9827484804398461922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2276696281) 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, 1108348140 + 1108348141.

It is an arithmetic number, because the mean of its divisors is an integer number (1108348141).

Almost surely, 2^2216696281 is an apocalyptic number.

It is an amenable number.

2216696281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216696281 is an equidigital number, since it uses as much as digits as its factorization.

2216696281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 2216696281 is about 47081.8041391789. The cubic root of 2216696281 is about 1303.8733161413.

The spelling of 2216696281 in words is "two billion, two hundred sixteen million, six hundred ninety-six thousand, two hundred eighty-one".