11200221 has 16 divisors (see below), whose sum is σ = 16744320. Its totient is φ = 7398720.

The previous prime is 11200213. The next prime is 11200237. The reversal of 11200221 is 12200211.

It is not a de Polignac number, because 11200221 - 2³ = 11200213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200261) 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, 1216 + ... + 4886.

It is an arithmetic number, because the mean of its divisors is an integer number (1046520).

Almost surely, 2^11200221 is an apocalyptic number.

It is an amenable number.

11200221 is a deficient number, since it is larger than the sum of its proper divisors (5544099).

11200221 is a wasteful number, since it uses less digits than its factorization.

11200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793 (or 3787 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11200221 is about 3346.6731241638. The cubic root of 11200221 is about 223.7392600153.

Adding to 11200221 its reverse (12200211), we get a palindrome (23400432).

The spelling of 11200221 in words is "eleven million, two hundred thousand, two hundred twenty-one".