111354543120 has 80 divisors (see below), whose sum is σ = 346542462720. Its totient is φ = 29578985472.

The previous prime is 111354543073. The next prime is 111354543127. The reversal of 111354543120 is 21345453111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×111354543120³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (111354543127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841000 + ... + 964359.

It is an arithmetic number, because the mean of its divisors is an integer number (4331780784).

Almost surely, 2^111354543120 is an apocalyptic number.

111354543120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111354543120 is an abundant number, since it is smaller than the sum of its proper divisors (235187919600).

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

111354543120 is a wasteful number, since it uses less digits than its factorization.

111354543120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805632 (or 1805626 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 111354543120 its reverse (21345453111), we get a palindrome (132699996231).

Subtracting from 111354543120 its reverse (21345453111), we obtain a palindrome (90009090009).

The spelling of 111354543120 in words is "one hundred eleven billion, three hundred fifty-four million, five hundred forty-three thousand, one hundred twenty".