111043020 has 48 divisors (see below), whose sum is σ = 339187968. Its totient is φ = 26919360.

The previous prime is 111043013. The next prime is 111043027. The reversal of 111043020 is 20340111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111043013) and next prime (111043027).

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 = 111042987 and 111043005.

It is not an unprimeable number, because it can be changed into a prime (111043027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83464 + ... + 84783.

It is an arithmetic number, because the mean of its divisors is an integer number (7066416).

Almost surely, 2^111043020 is an apocalyptic number.

111043020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111043020 is an abundant number, since it is smaller than the sum of its proper divisors (228144948).

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

111043020 is a wasteful number, since it uses less digits than its factorization.

111043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168270 (or 168268 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 111043020 is about 10537.6951939217. The cubic root of 111043020 is about 480.6516323260.

Adding to 111043020 its reverse (20340111), we get a palindrome (131383131).

The spelling of 111043020 in words is "one hundred eleven million, forty-three thousand, twenty".