111544541422120 has 96 divisors (see below), whose sum is σ = 256961826186120. Its totient is φ = 43577777886720.

The previous prime is 111544541422117. The next prime is 111544541422123. The reversal of 111544541422120 is 21224145445111.

It is an interprime number because it is at equal distance from previous prime (111544541422117) and next prime (111544541422123).

It can be written as a sum of positive squares in 4 ways, for example, as 108250831861956 + 3293709560164 = 10404366^2 + 1814858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111544541422120.

It is not an unprimeable number, because it can be changed into a prime (111544541422123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1949335110 + ... + 1949392330.

Almost surely, 2^{111544541422120} is an apocalyptic number.

111544541422120 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 111544541422120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128480913093060).

111544541422120 is an abundant number, since it is smaller than the sum of its proper divisors (145417284764000).

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

111544541422120 is a wasteful number, since it uses less digits than its factorization.

111544541422120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83675 (or 83628 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

Adding to 111544541422120 its reverse (21224145445111), we get a palindrome (132768686867231).

The spelling of 111544541422120 in words is "one hundred eleven trillion, five hundred forty-four billion, five hundred forty-one million, four hundred twenty-two thousand, one hundred twenty".