2122871 has 4 divisors (see below), whose sum is σ = 2133144. Its totient is φ = 2112600.

The previous prime is 2122859. The next prime is 2122873. The reversal of 2122871 is 1782212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122871 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 (2122873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4820 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (533286).

2^2122871 is an apocalyptic number.

2122871 is a deficient number, since it is larger than the sum of its proper divisors (10273).

2122871 is a wasteful number, since it uses less digits than its factorization.

2122871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272.

The product of its digits is 448, while the sum is 23.

The square root of 2122871 is about 1457.0075497402. The cubic root of 2122871 is about 128.5211298254.

The spelling of 2122871 in words is "two million, one hundred twenty-two thousand, eight hundred seventy-one".