11000111220 has 288 divisors, whose sum is σ = 40371851520. Its totient is φ = 2370816000.

The previous prime is 11000111203. The next prime is 11000111231. The reversal of 11000111220 is 2211100011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1567720 + ... + 1574720.

It is an arithmetic number, because the mean of its divisors is an integer number (140180040).

Almost surely, 2^11000111220 is an apocalyptic number.

11000111220 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 11000111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20185925760).

11000111220 is an abundant number, since it is smaller than the sum of its proper divisors (29371740300).

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

11000111220 is a wasteful number, since it uses less digits than its factorization.

11000111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095 (or 7090 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11000111220 its reverse (2211100011), we get a palindrome (13211211231).

The spelling of 11000111220 in words is "eleven billion, one hundred eleven thousand, two hundred twenty".