2101200212191 has 4 divisors (see below), whose sum is σ = 2101209569992. Its totient is φ = 2101190854392.

The previous prime is 2101200212173. The next prime is 2101200212213. The reversal of 2101200212191 is 1912120021012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101200212191 - 2²¹ = 2101198115039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101200212161) 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 3 ways as a sum of consecutive naturals, for example, 4333596 + ... + 4794001.

It is an arithmetic number, because the mean of its divisors is an integer number (525302392498).

Almost surely, 2^{2101200212191} is an apocalyptic number.

2101200212191 is a deficient number, since it is larger than the sum of its proper divisors (9357801).

2101200212191 is an equidigital number, since it uses as much as digits as its factorization.

2101200212191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9357800.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 2101200212191 in words is "two trillion, one hundred one billion, two hundred million, two hundred twelve thousand, one hundred ninety-one".