11203220 has 48 divisors (see below), whose sum is σ = 27527808. Its totient is φ = 3749760.

The previous prime is 11203219. The next prime is 11203243. The reversal of 11203220 is 2230211.

It is a happy number.

11203220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5090 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (573496).

Almost surely, 2^11203220 is an apocalyptic number.

11203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11203220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13763904).

11203220 is an abundant number, since it is smaller than the sum of its proper divisors (16324588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11203220 is a wasteful number, since it uses less digits than its factorization.

11203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920 (or 1918 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 11203220 is about 3347.1211510789. The cubic root of 11203220 is about 223.7592278998.

Adding to 11203220 its reverse (2230211), we get a palindrome (13433431).

The spelling of 11203220 in words is "eleven million, two hundred three thousand, two hundred twenty".