2127191 has 4 divisors (see below), whose sum is σ = 2320584. Its totient is φ = 1933800.

The previous prime is 2127163. The next prime is 2127269. The reversal of 2127191 is 1917212.

2127191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2127191 - 2¹⁰ = 2126167 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 (2127691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96680 + ... + 96701.

It is an arithmetic number, because the mean of its divisors is an integer number (580146).

2^2127191 is an apocalyptic number.

2127191 is a deficient number, since it is larger than the sum of its proper divisors (193393).

2127191 is a wasteful number, since it uses less digits than its factorization.

2127191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193392.

The product of its digits is 252, while the sum is 23.

The square root of 2127191 is about 1458.4892868993. The cubic root of 2127191 is about 128.6082500651.

The spelling of 2127191 in words is "two million, one hundred twenty-seven thousand, one hundred ninety-one".