111283020 has 144 divisors (see below), whose sum is σ = 366545088. Its totient is φ = 27217920.

The previous prime is 111283009. The next prime is 111283031. The reversal of 111283020 is 20382111.

It is an interprime number because it is at equal distance from previous prime (111283009) and next prime (111283031).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111282984 and 111283002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125017 + ... + 125903.

It is an arithmetic number, because the mean of its divisors is an integer number (2545452).

Almost surely, 2^111283020 is an apocalyptic number.

111283020 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 111283020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183272544).

111283020 is an abundant number, since it is smaller than the sum of its proper divisors (255262068).

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

111283020 is a wasteful number, since it uses less digits than its factorization.

111283020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 111283020 is about 10549.0767368524. The cubic root of 111283020 is about 480.9976645331.

Subtracting from 111283020 its reverse (20382111), we obtain a palindrome (90900909).

The spelling of 111283020 in words is "one hundred eleven million, two hundred eighty-three thousand, twenty".