11112333220 has 72 divisors (see below), whose sum is σ = 24934881384. Its totient is φ = 4158910464.

The previous prime is 11112333181. The next prime is 11112333223. The reversal of 11112333220 is 2233321111.

It can be written as a sum of positive squares in 12 ways, for example, as 892336384 + 10219996836 = 29872^2 + 101094^2 .

It is not an unprimeable number, because it can be changed into a prime (11112333223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 994384 + ... + 1005496.

It is an arithmetic number, because the mean of its divisors is an integer number (346317797).

Almost surely, 2^11112333220 is an apocalyptic number.

11112333220 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 11112333220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12467440692).

11112333220 is an abundant number, since it is smaller than the sum of its proper divisors (13822548164).

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

11112333220 is a wasteful number, since it uses less digits than its factorization.

11112333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329 (or 11310 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11112333220 its reverse (2233321111), we get a palindrome (13345654331).

The spelling of 11112333220 in words is "eleven billion, one hundred twelve million, three hundred thirty-three thousand, two hundred twenty".