11229281 has 12 divisors (see below), whose sum is σ = 13197780. Its totient is φ = 9525600.

The previous prime is 11229227. The next prime is 11229301. The reversal of 11229281 is 18292211.

It can be written as a sum of positive squares in 2 ways, for example, as 5664400 + 5564881 = 2380^2 + 2359^2 .

It is not a de Polignac number, because 11229281 - 2⁶ = 11229217 is a prime.

It is a super-2 number, since 2×11229281² = 252193503553922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11229281.

It is not an unprimeable number, because it can be changed into a prime (11249281) 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 11 ways as a sum of consecutive naturals, for example, 3815 + ... + 6083.

It is an arithmetic number, because the mean of its divisors is an integer number (1099815).

Almost surely, 2^11229281 is an apocalyptic number.

It is an amenable number.

11229281 is a deficient number, since it is larger than the sum of its proper divisors (1968499).

11229281 is a wasteful number, since it uses less digits than its factorization.

11229281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384 (or 2377 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 11229281 is about 3351.0119367140. The cubic root of 11229281 is about 223.9325969075.

The spelling of 11229281 in words is "eleven million, two hundred twenty-nine thousand, two hundred eighty-one".