111283220 has 12 divisors (see below), whose sum is σ = 233694804. Its totient is φ = 44513280.

The previous prime is 111283219. The next prime is 111283243. The reversal of 111283220 is 22382111.

It can be written as a sum of positive squares in 2 ways, for example, as 15007876 + 96275344 = 3874^2 + 9812^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5564161 = 111283220 / (1 + 1 + 1 + 2 + 8 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 111283192 and 111283201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2782061 + ... + 2782100.

It is an arithmetic number, because the mean of its divisors is an integer number (19474567).

Almost surely, 2^111283220 is an apocalyptic number.

111283220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111283220 is an abundant number, since it is smaller than the sum of its proper divisors (122411584).

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

111283220 is a wasteful number, since it uses less digits than its factorization.

111283220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564170 (or 5564168 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 111283220 is about 10549.0862163507. The cubic root of 111283220 is about 480.9979526857.

The spelling of 111283220 in words is "one hundred eleven million, two hundred eighty-three thousand, two hundred twenty".