11284221 has 16 divisors (see below), whose sum is σ = 16390080. Its totient is φ = 6864000.

The previous prime is 11284211. The next prime is 11284241. The reversal of 11284221 is 12248211.

It is not a de Polignac number, because 11284221 - 2⁹ = 11283709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11284201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846 + ... + 5096.

It is an arithmetic number, because the mean of its divisors is an integer number (1024380).

Almost surely, 2^11284221 is an apocalyptic number.

It is an amenable number.

11284221 is a deficient number, since it is larger than the sum of its proper divisors (5105859).

11284221 is a wasteful number, since it uses less digits than its factorization.

11284221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356.

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

The square root of 11284221 is about 3359.1994582043. The cubic root of 11284221 is about 224.2972046104.

The spelling of 11284221 in words is "eleven million, two hundred eighty-four thousand, two hundred twenty-one".