11335221 has 32 divisors (see below), whose sum is σ = 17475840. Its totient is φ = 7348320.

The previous prime is 11335213. The next prime is 11335223. The reversal of 11335221 is 12253311.

It is not a de Polignac number, because 11335221 - 2³ = 11335213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11335194 and 11335203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11335223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155241 + ... + 155313.

It is an arithmetic number, because the mean of its divisors is an integer number (546120).

Almost surely, 2^11335221 is an apocalyptic number.

It is an amenable number.

11335221 is a deficient number, since it is larger than the sum of its proper divisors (6140619).

11335221 is an frugal number, since it uses more digits than its factorization.

11335221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 147 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 11335221 is about 3366.7819947243. The cubic root of 11335221 is about 224.6346069341.

Adding to 11335221 its reverse (12253311), we get a palindrome (23588532).

The spelling of 11335221 in words is "eleven million, three hundred thirty-five thousand, two hundred twenty-one".