111424121120 has 96 divisors (see below), whose sum is σ = 286296035760. Its totient is φ = 40733798400.

The previous prime is 111424121111. The next prime is 111424121143. The reversal of 111424121120 is 21121424111.

It can be written as a sum of positive squares in 8 ways, for example, as 66104523664 + 45319597456 = 257108^2 + 212884^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111424121092 and 111424121101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55115 + ... + 475274.

Almost surely, 2^111424121120 is an apocalyptic number.

111424121120 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 111424121120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143148017880).

111424121120 is an abundant number, since it is smaller than the sum of its proper divisors (174871914640).

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

111424121120 is a wasteful number, since it uses less digits than its factorization.

111424121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530518 (or 530510 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111424121120 its reverse (21121424111), we get a palindrome (132545545231).

The spelling of 111424121120 in words is "one hundred eleven billion, four hundred twenty-four million, one hundred twenty-one thousand, one hundred twenty".