100112001012 has 108 divisors (see below), whose sum is σ = 269418505356. Its totient is φ = 31338055680.

The previous prime is 100112000999. The next prime is 100112001023. The reversal of 100112001012 is 210100211001.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1298593296 + 98813407716 = 36036^2 + 314346^2 .

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 = 100112000985 and 100112001003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4785808 + ... + 4806680.

Almost surely, 2^100112001012 is an apocalyptic number.

100112001012 is a gapful number since it is divisible by the number (12) 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 100112001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134709252678).

100112001012 is an abundant number, since it is smaller than the sum of its proper divisors (169306504344).

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

100112001012 is a wasteful number, since it uses less digits than its factorization.

100112001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21378 (or 21356 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100112001012 its reverse (210100211001), we get a palindrome (310212212013).

The spelling of 100112001012 in words is "one hundred billion, one hundred twelve million, one thousand, twelve".