20100200112 has 160 divisors (see below), whose sum is σ = 62146498560. Its totient is φ = 6201930240.

The previous prime is 20100200083. The next prime is 20100200123. The reversal of 20100200112 is 21100200102.

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 = 20100200094 and 20100200103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275388 + ... + 340644.

It is an arithmetic number, because the mean of its divisors is an integer number (388415616).

Almost surely, 2^20100200112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100200112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31073249280).

20100200112 is an abundant number, since it is smaller than the sum of its proper divisors (42046298448).

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

20100200112 is a wasteful number, since it uses less digits than its factorization.

20100200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65328 (or 65316 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20100200112 its reverse (21100200102), we get a palindrome (41200400214).

The spelling of 20100200112 in words is "twenty billion, one hundred million, two hundred thousand, one hundred twelve".