11243001220 has 96 divisors (see below), whose sum is σ = 26940211200. Its totient is φ = 3901349760.

The previous prime is 11243001193. The next prime is 11243001227. The reversal of 11243001220 is 2210034211.

It is a junction number, because it is equal to n+sod(n) for n = 11243001194 and 11243001203.

It is not an unprimeable number, because it can be changed into a prime (11243001227) 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, 2340381 + ... + 2345179.

It is an arithmetic number, because the mean of its divisors is an integer number (280627200).

Almost surely, 2^11243001220 is an apocalyptic number.

11243001220 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 11243001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13470105600).

11243001220 is an abundant number, since it is smaller than the sum of its proper divisors (15697209980).

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

11243001220 is a wasteful number, since it uses less digits than its factorization.

11243001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305 (or 5303 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11243001220 its reverse (2210034211), we get a palindrome (13453035431).

The spelling of 11243001220 in words is "eleven billion, two hundred forty-three million, one thousand, two hundred twenty".