1111122211100 has 108 divisors (see below), whose sum is σ = 2638245802920. Its totient is φ = 402832022400.

The previous prime is 1111122211093. The next prime is 1111122211109. The reversal of 1111122211100 is 11122211111.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111122211109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 132445706 + ... + 132454094.

Almost surely, 2^{1111122211100} is an apocalyptic number.

1111122211100 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 1111122211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319122901460).

1111122211100 is an abundant number, since it is smaller than the sum of its proper divisors (1527123591820).

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

1111122211100 is a wasteful number, since it uses less digits than its factorization.

1111122211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108 (or 8754 counting only the distinct ones).

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

Adding to 1111122211100 its reverse (11122211111), we get a palindrome (1122244422211).

The spelling of 1111122211100 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, one hundred".