1112221111100 has 144 divisors (see below), whose sum is σ = 2668882680576. Its totient is φ = 398955648000.

The previous prime is 1112221111091. The next prime is 1112221111187. The reversal of 1112221111100 is 11111222111.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26206097 + ... + 26248503.

It is an arithmetic number, because the mean of its divisors is an integer number (18533907504).

Almost surely, 2^{1112221111100} is an apocalyptic number.

1112221111100 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 1112221111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334441340288).

1112221111100 is an abundant number, since it is smaller than the sum of its proper divisors (1556661569476).

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

1112221111100 is a wasteful number, since it uses less digits than its factorization.

1112221111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42756 (or 42749 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1112221111100 its reverse (11111222111), we get a palindrome (1123332333211).

The spelling of 1112221111100 in words is "one trillion, one hundred twelve billion, two hundred twenty-one million, one hundred eleven thousand, one hundred".