3271221 has 12 divisors (see below), whose sum is σ = 4930848. Its totient is φ = 2085864.

The previous prime is 3271217. The next prime is 3271223. The reversal of 3271221 is 1221723.

It is not a de Polignac number, because 3271221 - 2² = 3271217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3271194 and 3271203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3271223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7695 + ... + 8108.

It is an arithmetic number, because the mean of its divisors is an integer number (410904).

Almost surely, 2^3271221 is an apocalyptic number.

It is an amenable number.

3271221 is a deficient number, since it is larger than the sum of its proper divisors (1659627).

3271221 is a wasteful number, since it uses less digits than its factorization.

3271221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15832 (or 15829 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 3271221 is about 1808.6517077647. The cubic root of 3271221 is about 148.4464997904.

Adding to 3271221 its reverse (1221723), we get a palindrome (4492944).

It can be divided in two parts, 32 and 71221, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 3271221 in words is "three million, two hundred seventy-one thousand, two hundred twenty-one".