11112220 has 144 divisors (see below), whose sum is σ = 31026240. Its totient is φ = 3311616.

The previous prime is 11112217. The next prime is 11112239. The reversal of 11112220 is 2221111.

11112220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11112197 and 11112206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 383166 + ... + 383194.

It is an arithmetic number, because the mean of its divisors is an integer number (215460).

Almost surely, 2^11112220 is an apocalyptic number.

11112220 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 11112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15513120).

11112220 is an abundant number, since it is smaller than the sum of its proper divisors (19914020).

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

11112220 is a wasteful number, since it uses less digits than its factorization.

11112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 11112220 is about 3333.4996625169. The cubic root of 11112220 is about 223.1517397147.

Adding to 11112220 its reverse (2221111), we get a palindrome (13333331).

The spelling of 11112220 in words is "eleven million, one hundred twelve thousand, two hundred twenty".