111141102440 has 64 divisors (see below), whose sum is σ = 254991784320. Its totient is φ = 43587936000.

The previous prime is 111141102421. The next prime is 111141102467. The reversal of 111141102440 is 44201141111.

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

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, 405935 + ... + 622145.

It is an arithmetic number, because the mean of its divisors is an integer number (3984246630).

Almost surely, 2^111141102440 is an apocalyptic number.

111141102440 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 111141102440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127495892160).

111141102440 is an abundant number, since it is smaller than the sum of its proper divisors (143850681880).

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

111141102440 is a wasteful number, since it uses less digits than its factorization.

111141102440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216474 (or 216470 counting only the distinct ones).

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

Adding to 111141102440 its reverse (44201141111), we get a palindrome (155342243551).

The spelling of 111141102440 in words is "one hundred eleven billion, one hundred forty-one million, one hundred two thousand, four hundred forty".