111220000 has 120 divisors (see below), whose sum is σ = 281047536. Its totient is φ = 43296000.

The previous prime is 111219991. The next prime is 111220037. The reversal of 111220000 is 22111.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1339959 + ... + 1340041.

Almost surely, 2^111220000 is an apocalyptic number.

111220000 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 111220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140523768).

111220000 is an abundant number, since it is smaller than the sum of its proper divisors (169827536).

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

111220000 is an frugal number, since it uses more digits than its factorization.

111220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 111220000 is about 10546.0893225878. The cubic root of 111220000 is about 480.9068504489.

Adding to 111220000 its reverse (22111), we get a palindrome (111242111).

It can be divided in two parts, 1112 and 20000, that added together give a palindrome (21112).

The spelling of 111220000 in words is "one hundred eleven million, two hundred twenty thousand".