11220523 has 4 divisors (see below), whose sum is σ = 11404528. Its totient is φ = 11036520.

The previous prime is 11220491. The next prime is 11220533. The reversal of 11220523 is 32502211.

11220523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11220523 - 2⁵ = 11220491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220497 and 11220506.

It is not an unprimeable number, because it can be changed into a prime (11220533) 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 3 ways as a sum of consecutive naturals, for example, 91911 + ... + 92032.

It is an arithmetic number, because the mean of its divisors is an integer number (2851132).

Almost surely, 2^11220523 is an apocalyptic number.

11220523 is a deficient number, since it is larger than the sum of its proper divisors (184005).

11220523 is an equidigital number, since it uses as much as digits as its factorization.

11220523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184004.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 11220523 is about 3349.7049123766. The cubic root of 11220523 is about 223.8743648691.

Adding to 11220523 its reverse (32502211), we get a palindrome (43722734).

The spelling of 11220523 in words is "eleven million, two hundred twenty thousand, five hundred twenty-three".