111244124420 has 96 divisors (see below), whose sum is σ = 274552346880. Its totient is φ = 37327311360.

The previous prime is 111244124419. The next prime is 111244124441. The reversal of 111244124420 is 24421442111.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 111244124420.

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, 11043146 + ... + 11053214.

It is an arithmetic number, because the mean of its divisors is an integer number (2859920280).

Almost surely, 2^111244124420 is an apocalyptic number.

111244124420 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 111244124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137276173440).

111244124420 is an abundant number, since it is smaller than the sum of its proper divisors (163308222460).

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

111244124420 is a wasteful number, since it uses less digits than its factorization.

111244124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13965 (or 13963 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 111244124420 its reverse (24421442111), we get a palindrome (135665566531).

The spelling of 111244124420 in words is "one hundred eleven billion, two hundred forty-four million, one hundred twenty-four thousand, four hundred twenty".