111101124420 has 480 divisors, whose sum is σ = 433561113216. Its totient is φ = 23398502400.

The previous prime is 111101124373. The next prime is 111101124451. The reversal of 111101124420 is 24421101111.

111101124420 is a `hidden beast` number, since 1 + 1 + 110 + 112 + 442 + 0 = 666.

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 = 111101124393 and 111101124402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3924115 + ... + 3952325.

Almost surely, 2^111101124420 is an apocalyptic number.

111101124420 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 111101124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216780556608).

111101124420 is an abundant number, since it is smaller than the sum of its proper divisors (322459988796).

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

111101124420 is a wasteful number, since it uses less digits than its factorization.

111101124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28273 (or 28262 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111101124420 its reverse (24421101111), we get a palindrome (135522225531).

The spelling of 111101124420 in words is "one hundred eleven billion, one hundred one million, one hundred twenty-four thousand, four hundred twenty".