111241020 has 96 divisors (see below), whose sum is σ = 350816256. Its totient is φ = 26092800.

The previous prime is 111241007. The next prime is 111241033. The reversal of 111241020 is 20142111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111241007) and next prime (111241033).

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 = 111240987 and 111241005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17742 + ... + 23178.

It is an arithmetic number, because the mean of its divisors is an integer number (3654336).

Almost surely, 2^111241020 is an apocalyptic number.

111241020 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 111241020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175408128).

111241020 is an abundant number, since it is smaller than the sum of its proper divisors (239575236).

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

111241020 is a wasteful number, since it uses less digits than its factorization.

111241020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491 (or 5489 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 111241020 is about 10547.0858534479. The cubic root of 111241020 is about 480.9371448361.

Adding to 111241020 its reverse (20142111), we get a palindrome (131383131).

The spelling of 111241020 in words is "one hundred eleven million, two hundred forty-one thousand, twenty".