11263221 has 12 divisors (see below), whose sum is σ = 16615872. Its totient is φ = 7348776.

The previous prime is 11263193. The next prime is 11263229. The reversal of 11263221 is 12236211.

11263221 is a `hidden beast` number, since 1 + 12 + 632 + 21 = 666.

It is not a de Polignac number, because 11263221 - 2⁶ = 11263157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11263194 and 11263203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11263229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12891 + ... + 13736.

It is an arithmetic number, because the mean of its divisors is an integer number (1384656).

Almost surely, 2^11263221 is an apocalyptic number.

It is an amenable number.

11263221 is a deficient number, since it is larger than the sum of its proper divisors (5352651).

11263221 is a wasteful number, since it uses less digits than its factorization.

11263221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26680 (or 26677 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 11263221 is about 3356.0722578633. The cubic root of 11263221 is about 224.1579787466.

Adding to 11263221 its reverse (12236211), we get a palindrome (23499432).

The spelling of 11263221 in words is "eleven million, two hundred sixty-three thousand, two hundred twenty-one".