2101271 has 4 divisors (see below), whose sum is σ = 2104200. Its totient is φ = 2098344.

The previous prime is 2101261. The next prime is 2101277. The reversal of 2101271 is 1721012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2101271 - 2⁶ = 2101207 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 (2101277) 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, 425 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (526050).

2^2101271 is an apocalyptic number.

2101271 is a deficient number, since it is larger than the sum of its proper divisors (2929).

2101271 is a wasteful number, since it uses less digits than its factorization.

2101271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 2101271 is about 1449.5761449472. The cubic root of 2101271 is about 128.0837464648.

Adding to 2101271 its reverse (1721012), we get a palindrome (3822283).

The spelling of 2101271 in words is "two million, one hundred one thousand, two hundred seventy-one".