111112420 has 24 divisors (see below), whose sum is σ = 235481400. Its totient is φ = 44036352.

The previous prime is 111112411. The next prime is 111112447. The reversal of 111112420 is 24211111.

It can be written as a sum of positive squares in 4 ways, for example, as 5721664 + 105390756 = 2392^2 + 10266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111112420.

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, 23305 + ... + 27664.

It is an arithmetic number, because the mean of its divisors is an integer number (9811725).

Almost surely, 2^111112420 is an apocalyptic number.

111112420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112420 is an abundant number, since it is smaller than the sum of its proper divisors (124368980).

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

111112420 is a wasteful number, since it uses less digits than its factorization.

111112420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51087 (or 51085 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 111112420 is about 10540.9876197632. The cubic root of 111112420 is about 480.7517445062.

Adding to 111112420 its reverse (24211111), we get a palindrome (135323531).

It can be divided in two parts, 11111 and 2420, that added together give a palindrome (13531).

The spelling of 111112420 in words is "one hundred eleven million, one hundred twelve thousand, four hundred twenty".