11066218281 has 6 divisors (see below), whose sum is σ = 15984537530. Its totient is φ = 7377478848.

The previous prime is 11066218249. The next prime is 11066218313. The reversal of 11066218281 is 18281266011.

11066218281 is a `hidden beast` number, since 1 + 1 + 0 + 6 + 621 + 8 + 28 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11066218249) and next prime (11066218313).

It can be written as a sum of positive squares in only one way, i.e., 6969578256 + 4096640025 = 83484^2 + 64005^2 .

It is not a de Polignac number, because 11066218281 - 2⁵ = 11066218249 is a prime.

It is a super-2 number, since 2×11066218281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11066218181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 614789896 + ... + 614789913.

Almost surely, 2^11066218281 is an apocalyptic number.

It is an amenable number.

11066218281 is a deficient number, since it is larger than the sum of its proper divisors (4918319249).

11066218281 is a wasteful number, since it uses less digits than its factorization.

11066218281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229579815 (or 1229579812 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 11066218281 in words is "eleven billion, sixty-six million, two hundred eighteen thousand, two hundred eighty-one".