11215223 has 12 divisors (see below), whose sum is σ = 12039312. Its totient is φ = 10444800.

The previous prime is 11215213. The next prime is 11215229. The reversal of 11215223 is 32251211.

It is a happy number.

11215223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11215223 - 2⁴ = 11215207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215229) 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 11 ways as a sum of consecutive naturals, for example, 43511 + ... + 43767.

It is an arithmetic number, because the mean of its divisors is an integer number (1003276).

Almost surely, 2^11215223 is an apocalyptic number.

11215223 is a deficient number, since it is larger than the sum of its proper divisors (824089).

11215223 is a wasteful number, since it uses less digits than its factorization.

11215223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 425 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 11215223 is about 3348.9137044719. The cubic root of 11215223 is about 223.8391103923.

Adding to 11215223 its reverse (32251211), we get a palindrome (43466434).

The spelling of 11215223 in words is "eleven million, two hundred fifteen thousand, two hundred twenty-three".