2065221 has 6 divisors (see below), whose sum is σ = 2983110. Its totient is φ = 1376808.

The previous prime is 2065213. The next prime is 2065241. The reversal of 2065221 is 1225602.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 34596 = 1425^2 + 186^2 .

It is not a de Polignac number, because 2065221 - 2³ = 2065213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2065194 and 2065203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065241) 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 5 ways as a sum of consecutive naturals, for example, 114726 + ... + 114743.

It is an arithmetic number, because the mean of its divisors is an integer number (497185).

2^2065221 is an apocalyptic number.

It is an amenable number.

2065221 is a deficient number, since it is larger than the sum of its proper divisors (917889).

2065221 is a wasteful number, since it uses less digits than its factorization.

2065221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229475 (or 229472 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2065221 is about 1437.0876799973. The cubic root of 2065221 is about 127.3470368617.

The spelling of 2065221 in words is "two million, sixty-five thousand, two hundred twenty-one".