111210102211100 has 144 divisors (see below), whose sum is σ = 255715483161600. Its totient is φ = 41835574656000.

The previous prime is 111210102211081. The next prime is 111210102211133. The reversal of 111210102211100 is 1112201012111.

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, 21810176351 + ... + 21810181449.

It is an arithmetic number, because the mean of its divisors is an integer number (1775801966400).

Almost surely, 2^{111210102211100} is an apocalyptic number.

111210102211100 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 111210102211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127857741580800).

111210102211100 is an abundant number, since it is smaller than the sum of its proper divisors (144505380950500).

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

111210102211100 is a wasteful number, since it uses less digits than its factorization.

111210102211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348 (or 12341 counting only the distinct ones).

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

Adding to 111210102211100 its reverse (1112201012111), we get a palindrome (112322303223211).

The spelling of 111210102211100 in words is "one hundred eleven trillion, two hundred ten billion, one hundred two million, two hundred eleven thousand, one hundred".