2112100200100 has 36 divisors (see below), whose sum is σ = 4999917203568. Its totient is φ = 768036436000.

The previous prime is 2112100200079. The next prime is 2112100200101. The reversal of 2112100200100 is 10020012112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2112100200101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 960044446 + ... + 960046645.

It is an arithmetic number, because the mean of its divisors is an integer number (138886588988).

Almost surely, 2^{2112100200100} is an apocalyptic number.

2112100200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112100200100 is an abundant number, since it is smaller than the sum of its proper divisors (2887817003468).

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

2112100200100 is a wasteful number, since it uses less digits than its factorization.

2112100200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920091116 (or 1920091109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2112100200100 its reverse (10020012112), we get a palindrome (2122120212212).

It can be divided in two parts, 21 and 12100200100, that added together give a palindrome (12100200121).

The spelling of 2112100200100 in words is "two trillion, one hundred twelve billion, one hundred million, two hundred thousand, one hundred".