111211202020100 has 288 divisors, whose sum is σ = 300046296974592. Its totient is φ = 34838035200000.

The previous prime is 111211202020057. The next prime is 111211202020129. The reversal of 111211202020100 is 1020202112111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3612966710 + ... + 3612997490.

Almost surely, 2^{111211202020100} is an apocalyptic number.

111211202020100 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 111211202020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150023148487296).

111211202020100 is an abundant number, since it is smaller than the sum of its proper divisors (188835094954492).

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

111211202020100 is a wasteful number, since it uses less digits than its factorization.

111211202020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34847 (or 34840 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111211202020100 its reverse (1020202112111), we get a palindrome (112231404132211).

The spelling of 111211202020100 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, twenty thousand, one hundred".