3221016 has 32 divisors (see below), whose sum is σ = 8136960. Its totient is φ = 1062432.

The previous prime is 3220967. The next prime is 3221017. The reversal of 3221016 is 6101223.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3220986 and 3221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (254280).

Almost surely, 2^3221016 is an apocalyptic number.

It is an amenable number.

3221016 is an abundant number, since it is smaller than the sum of its proper divisors (4915944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221016 is a wasteful number, since it uses less digits than its factorization.

3221016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3221016 is about 1794.7189194969. The cubic root of 3221016 is about 147.6831546478.

Adding to 3221016 its reverse (6101223), we get a palindrome (9322239).

The spelling of 3221016 in words is "three million, two hundred twenty-one thousand, sixteen".