100111101210 has 96 divisors (see below), whose sum is σ = 269571773952. Its totient is φ = 25760206080.

The previous prime is 100111101197. The next prime is 100111101221. The reversal of 100111101210 is 12101111001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100111101192 and 100111101201.

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 47 ways as a sum of consecutive naturals, for example, 133662 + ... + 466998.

It is an arithmetic number, because the mean of its divisors is an integer number (2808039312).

Almost surely, 2^100111101210 is an apocalyptic number.

100111101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100111101210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134785886976).

100111101210 is an abundant number, since it is smaller than the sum of its proper divisors (169460672742).

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

100111101210 is a wasteful number, since it uses less digits than its factorization.

100111101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333468 (or 333465 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 100111101210 its reverse (12101111001), we get a palindrome (112212212211).

The spelling of 100111101210 in words is "one hundred billion, one hundred eleven million, one hundred one thousand, two hundred ten".