212101200191 has 16 divisors (see below), whose sum is σ = 215224073568. Its totient is φ = 209004364800.

The previous prime is 212101200187. The next prime is 212101200211. The reversal of 212101200191 is 191002101212.

It is a cyclic number.

It is not a de Polignac number, because 212101200191 - 2² = 212101200187 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 (212101200491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19668221 + ... + 19679001.

It is an arithmetic number, because the mean of its divisors is an integer number (13451504598).

Almost surely, 2^212101200191 is an apocalyptic number.

212101200191 is a deficient number, since it is larger than the sum of its proper divisors (3122873377).

212101200191 is a wasteful number, since it uses less digits than its factorization.

212101200191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11962.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 212101200191 in words is "two hundred twelve billion, one hundred one million, two hundred thousand, one hundred ninety-one".