111210221220100 has 144 divisors (see below), whose sum is σ = 256433023000000. Its totient is φ = 41743983536640.

The previous prime is 111210221220073. The next prime is 111210221220139. The reversal of 111210221220100 is 1022122012111.

111210221220100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 724566166 + ... + 724719634.

Almost surely, 2^{111210221220100} is an apocalyptic number.

111210221220100 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 111210221220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128216511500000).

111210221220100 is an abundant number, since it is smaller than the sum of its proper divisors (145222801779900).

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

111210221220100 is a wasteful number, since it uses less digits than its factorization.

111210221220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157110 (or 157103 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111210221220100 its reverse (1022122012111), we get a palindrome (112232343232211).

The spelling of 111210221220100 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, one hundred".