11243213220 has 48 divisors (see below), whose sum is σ = 31510035648. Its totient is φ = 2995424640.

The previous prime is 11243213183. The next prime is 11243213227. The reversal of 11243213220 is 2231234211.

It is not an unprimeable number, because it can be changed into a prime (11243213227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20419 + ... + 151338.

It is an arithmetic number, because the mean of its divisors is an integer number (656459076).

Almost surely, 2^11243213220 is an apocalyptic number.

11243213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11243213220 is an abundant number, since it is smaller than the sum of its proper divisors (20266822428).

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

11243213220 is a wasteful number, since it uses less digits than its factorization.

11243213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172860 (or 172858 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 11243213220 its reverse (2231234211), we get a palindrome (13474447431).

The spelling of 11243213220 in words is "eleven billion, two hundred forty-three million, two hundred thirteen thousand, two hundred twenty".