111113220 has 48 divisors (see below), whose sum is σ = 319531968. Its totient is φ = 28828800.

The previous prime is 111113213. The next prime is 111113221. The reversal of 111113220 is 22311111.

It is a super-2 number, since 2×111113220² = 24692295317536800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111113196 and 111113205.

It is not an unprimeable number, because it can be changed into a prime (111113221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22806 + ... + 27245.

It is an arithmetic number, because the mean of its divisors is an integer number (6656916).

Almost surely, 2^111113220 is an apocalyptic number.

111113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111113220 is an abundant number, since it is smaller than the sum of its proper divisors (208418748).

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

111113220 is a wasteful number, since it uses less digits than its factorization.

111113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50100 (or 50098 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111113220 is about 10541.0255668033. The cubic root of 111113220 is about 480.7528982940.

Adding to 111113220 its reverse (22311111), we get a palindrome (133424331).

The spelling of 111113220 in words is "one hundred eleven million, one hundred thirteen thousand, two hundred twenty".