111143244020 has 96 divisors (see below), whose sum is σ = 244590192000. Its totient is φ = 42377347584.

The previous prime is 111143243993. The next prime is 111143244097. The reversal of 111143244020 is 20442341111.

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, 33688331 + ... + 33691629.

It is an arithmetic number, because the mean of its divisors is an integer number (2547814500).

Almost surely, 2^111143244020 is an apocalyptic number.

111143244020 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 111143244020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122295096000).

111143244020 is an abundant number, since it is smaller than the sum of its proper divisors (133446947980).

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

111143244020 is a wasteful number, since it uses less digits than its factorization.

111143244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 111143244020 its reverse (20442341111), we get a palindrome (131585585131).

The spelling of 111143244020 in words is "one hundred eleven billion, one hundred forty-three million, two hundred forty-four thousand, twenty".