11224521 has 32 divisors (see below), whose sum is σ = 20736000. Its totient is φ = 5829840.

The previous prime is 11224519. The next prime is 11224523. The reversal of 11224521 is 12542211.

11224521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11224519) and next prime (11224523).

It is not a de Polignac number, because 11224521 - 2¹ = 11224519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11224494 and 11224503.

It is not an unprimeable number, because it can be changed into a prime (11224523) 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, 621 + ... + 4778.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^11224521 is an apocalyptic number.

11224521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11224521 is a deficient number, since it is larger than the sum of its proper divisors (9511479).

11224521 is a wasteful number, since it uses less digits than its factorization.

11224521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426 (or 5420 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 11224521 is about 3350.3016282120. The cubic root of 11224521 is about 223.9009513727.

Adding to 11224521 its reverse (12542211), we get a palindrome (23766732).

The spelling of 11224521 in words is "eleven million, two hundred twenty-four thousand, five hundred twenty-one".