3221012 has 24 divisors (see below), whose sum is σ = 5945856. Its totient is φ = 1523808.

The previous prime is 3220967. The next prime is 3221017. The reversal of 3221012 is 2101223.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3220984 and 3221002.

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, 14333 + ... + 14555.

It is an arithmetic number, because the mean of its divisors is an integer number (247744).

Almost surely, 2^3221012 is an apocalyptic number.

It is an amenable number.

3221012 is a deficient number, since it is larger than the sum of its proper divisors (2724844).

3221012 is a wasteful number, since it uses less digits than its factorization.

3221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3221012 is about 1794.7178051159. The cubic root of 3221012 is about 147.6830935146.

Adding to 3221012 its reverse (2101223), we get a palindrome (5322235).

The spelling of 3221012 in words is "three million, two hundred twenty-one thousand, twelve".