11221284 has 12 divisors (see below), whose sum is σ = 26183024. Its totient is φ = 3740424.

The previous prime is 11221283. The next prime is 11221303. The reversal of 11221284 is 48212211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 11221284.

It is not an unprimeable number, because it can be changed into a prime (11221283) 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 3 ways as a sum of consecutive naturals, for example, 467542 + ... + 467565.

Almost surely, 2^11221284 is an apocalyptic number.

It is an amenable number.

11221284 is an abundant number, since it is smaller than the sum of its proper divisors (14961740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221284 is a wasteful number, since it uses less digits than its factorization.

11221284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935114 (or 935112 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

The square root of 11221284 is about 3349.8185025461. The cubic root of 11221284 is about 223.8794259683.

Adding to 11221284 its reverse (48212211), we get a palindrome (59433495).

The spelling of 11221284 in words is "eleven million, two hundred twenty-one thousand, two hundred eighty-four".