2112102191 has 8 divisors (see below), whose sum is σ = 2174923920. Its totient is φ = 2049582528.

The previous prime is 2112102173. The next prime is 2112102197. The reversal of 2112102191 is 1912012112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112102191 - 2¹⁸ = 2111840047 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 (2112102197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61286 + ... + 89331.

It is an arithmetic number, because the mean of its divisors is an integer number (271865490).

Almost surely, 2^2112102191 is an apocalyptic number.

2112102191 is a deficient number, since it is larger than the sum of its proper divisors (62821729).

2112102191 is a wasteful number, since it uses less digits than its factorization.

2112102191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151033.

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

The square root of 2112102191 is about 45957.6129819642. The cubic root of 2112102191 is about 1283.0344249184.

The spelling of 2112102191 in words is "two billion, one hundred twelve million, one hundred two thousand, one hundred ninety-one".