2011321 has 16 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 1651968.

The previous prime is 2011309. The next prime is 2011333. The reversal of 2011321 is 1231102.

It is an interprime number because it is at equal distance from previous prime (2011309) and next prime (2011333).

It is a cyclic number.

It is not a de Polignac number, because 2011321 - 2⁷ = 2011193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011298 and 2011307.

It is not an unprimeable number, because it can be changed into a prime (2011381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3960 + ... + 4438.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

2^2011321 is an apocalyptic number.

It is an amenable number.

2011321 is a deficient number, since it is larger than the sum of its proper divisors (407879).

2011321 is a wasteful number, since it uses less digits than its factorization.

2011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2011321 is about 1418.2104921344. The cubic root of 2011321 is about 126.2293839486.

Adding to 2011321 its reverse (1231102), we get a palindrome (3242423).

It can be divided in two parts, 2011 and 321, that added together give a palindrome (2332).

The spelling of 2011321 in words is "two million, eleven thousand, three hundred twenty-one".