100111212211100 has 144 divisors (see below), whose sum is σ = 225728521200000. Its totient is φ = 38492347299840.

The previous prime is 100111212211061. The next prime is 100111212211111. The reversal of 100111212211100 is 1112212111001.

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, 3222206366 + ... + 3222237434.

It is an arithmetic number, because the mean of its divisors is an integer number (1567559175000).

Almost surely, 2^{100111212211100} is an apocalyptic number.

100111212211100 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 100111212211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112864260600000).

100111212211100 is an abundant number, since it is smaller than the sum of its proper divisors (125617308988900).

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

100111212211100 is a wasteful number, since it uses less digits than its factorization.

100111212211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000 (or 35993 counting only the distinct ones).

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

Adding to 100111212211100 its reverse (1112212111001), we get a palindrome (101223424322101).

It can be divided in two parts, 10011121 and 2211100, that added together give a palindrome (12222221).

The spelling of 100111212211100 in words is "one hundred trillion, one hundred eleven billion, two hundred twelve million, two hundred eleven thousand, one hundred".