111444100000 has 288 divisors, whose sum is σ = 287734083840. Its totient is φ = 42430080000.

The previous prime is 111444099983. The next prime is 111444100007. The reversal of 111444100000 is 1444111.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (111444100007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240699769 + ... + 240700231.

It is an arithmetic number, because the mean of its divisors is an integer number (999076680).

Almost surely, 2^111444100000 is an apocalyptic number.

111444100000 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 111444100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143867041920).

111444100000 is an abundant number, since it is smaller than the sum of its proper divisors (176289983840).

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

111444100000 is an frugal number, since it uses more digits than its factorization.

111444100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111444100000 its reverse (1444111), we get a palindrome (111445544111).

The spelling of 111444100000 in words is "one hundred eleven billion, four hundred forty-four million, one hundred thousand".