2100200021192 has 128 divisors (see below), whose sum is σ = 4914713717760. Its totient is φ = 819182315520.

The previous prime is 2100200021147. The next prime is 2100200021197. The reversal of 2100200021192 is 2911200020012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2100200021197) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 218470178 + ... + 218479790.

It is an arithmetic number, because the mean of its divisors is an integer number (38396200920).

Almost surely, 2^{2100200021192} 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 2100200021192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2457356858880).

2100200021192 is an abundant number, since it is smaller than the sum of its proper divisors (2814513696568).

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

2100200021192 is a wasteful number, since it uses less digits than its factorization.

2100200021192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13823 (or 13819 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 2100200021192 in words is "two trillion, one hundred billion, two hundred million, twenty-one thousand, one hundred ninety-two".