111242012140 has 48 divisors (see below), whose sum is σ = 270638125632. Its totient is φ = 37617647616.

The previous prime is 111242012069. The next prime is 111242012149. The reversal of 111242012140 is 41210242111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111242012149) 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, 5432149 + ... + 5452588.

It is an arithmetic number, because the mean of its divisors is an integer number (5638294284).

Almost surely, 2^111242012140 is an apocalyptic number.

111242012140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111242012140 is an abundant number, since it is smaller than the sum of its proper divisors (159396113492).

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

111242012140 is a wasteful number, since it uses less digits than its factorization.

111242012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884826 (or 10884824 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111242012140 its reverse (41210242111), we get a palindrome (152452254251).

The spelling of 111242012140 in words is "one hundred eleven billion, two hundred forty-two million, twelve thousand, one hundred forty".