11011133220 has 24 divisors (see below), whose sum is σ = 30831173184. Its totient is φ = 2936302176.

The previous prime is 11011133219. The next prime is 11011133303. The reversal of 11011133220 is 2233111011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11011133220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91759384 + ... + 91759503.

It is an arithmetic number, because the mean of its divisors is an integer number (1284632216).

Almost surely, 2^11011133220 is an apocalyptic number.

11011133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011133220 is an abundant number, since it is smaller than the sum of its proper divisors (19820039964).

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

11011133220 is a wasteful number, since it uses less digits than its factorization.

11011133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183518899 (or 183518897 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11011133220 its reverse (2233111011), we get a palindrome (13244244231).

The spelling of 11011133220 in words is "eleven billion, eleven million, one hundred thirty-three thousand, two hundred twenty".