2271121 has 4 divisors (see below), whose sum is σ = 2287600. Its totient is φ = 2254644.

The previous prime is 2271119. The next prime is 2271133. The reversal of 2271121 is 1211722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1211722 = 2 ⋅605861.

It is a cyclic number.

It is not a de Polignac number, because 2271121 - 2¹ = 2271119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2271095 and 2271104.

It is not an unprimeable number, because it can be changed into a prime (2271151) 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, 8031 + ... + 8308.

It is an arithmetic number, because the mean of its divisors is an integer number (571900).

2^2271121 is an apocalyptic number.

It is an amenable number.

2271121 is a deficient number, since it is larger than the sum of its proper divisors (16479).

2271121 is a wasteful number, since it uses less digits than its factorization.

2271121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16478.

The product of its digits is 56, while the sum is 16.

The square root of 2271121 is about 1507.0238883309. The cubic root of 2271121 is about 131.4458132367.

Adding to 2271121 its reverse (1211722), we get a palindrome (3482843).

The spelling of 2271121 in words is "two million, two hundred seventy-one thousand, one hundred twenty-one".