11221203 has 16 divisors (see below), whose sum is σ = 17464320. Its totient is φ = 6275136.

The previous prime is 11221193. The next prime is 11221211. The reversal of 11221203 is 30212211.

It is not a de Polignac number, because 11221203 - 2⁴ = 11221187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4698 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (1091520).

Almost surely, 2^11221203 is an apocalyptic number.

11221203 is a deficient number, since it is larger than the sum of its proper divisors (6243117).

11221203 is a wasteful number, since it uses less digits than its factorization.

11221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11426.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 11221203 is about 3349.8064123170. The cubic root of 11221203 is about 223.8788872813.

Adding to 11221203 its reverse (30212211), we get a palindrome (41433414).

The spelling of 11221203 in words is "eleven million, two hundred twenty-one thousand, two hundred three".