111121241112 has 96 divisors (see below), whose sum is σ = 344519928480. Its totient is φ = 31696012800.

The previous prime is 111121241089. The next prime is 111121241117. The reversal of 111121241112 is 211142121111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121241117) 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, 119478 + ... + 486330.

It is an arithmetic number, because the mean of its divisors is an integer number (3588749255).

Almost surely, 2^111121241112 is an apocalyptic number.

111121241112 is a gapful number since it is divisible by the number (12) 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 111121241112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172259964240).

111121241112 is an abundant number, since it is smaller than the sum of its proper divisors (233398687368).

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

111121241112 is a wasteful number, since it uses less digits than its factorization.

111121241112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367473 (or 367466 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 111121241112 its reverse (211142121111), we get a palindrome (322263362223).

The spelling of 111121241112 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred forty-one thousand, one hundred twelve".