111003122221100 has 144 divisors (see below), whose sum is σ = 252745893394176. Its totient is φ = 42260742144000.

The previous prime is 111003122221081. The next prime is 111003122221157. The reversal of 111003122221100 is 1122221300111.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3013668284 + ... + 3013705116.

Almost surely, 2^{111003122221100} is an apocalyptic number.

111003122221100 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 111003122221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126372946697088).

111003122221100 is an abundant number, since it is smaller than the sum of its proper divisors (141742771173076).

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

111003122221100 is a wasteful number, since it uses less digits than its factorization.

111003122221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52876 (or 52869 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111003122221100 its reverse (1122221300111), we get a palindrome (112125343521211).

The spelling of 111003122221100 in words is "one hundred eleven trillion, three billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred".