100011211100 has 72 divisors (see below), whose sum is σ = 225152256000. Its totient is φ = 38519236800.

The previous prime is 100011211093. The next prime is 100011211129. The reversal of 100011211100 is 1112110001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535841 + ... + 697959.

Almost surely, 2^100011211100 is an apocalyptic number.

100011211100 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 100011211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112576128000).

100011211100 is an abundant number, since it is smaller than the sum of its proper divisors (125141044900).

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

100011211100 is a wasteful number, since it uses less digits than its factorization.

100011211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162363 (or 162356 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100011211100 its reverse (1112110001), we get a palindrome (101123321101).

The spelling of 100011211100 in words is "one hundred billion, eleven million, two hundred eleven thousand, one hundred".