3221147 has 6 divisors (see below), whose sum is σ = 3276588. Its totient is φ = 3166184.

The previous prime is 3221137. The next prime is 3221167. The reversal of 3221147 is 7411223.

3221147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3221147 - 2²⁰ = 2172571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221107) 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, 16253 + ... + 16449.

It is an arithmetic number, because the mean of its divisors is an integer number (546098).

Almost surely, 2^3221147 is an apocalyptic number.

3221147 is a deficient number, since it is larger than the sum of its proper divisors (55441).

3221147 is an frugal number, since it uses more digits than its factorization.

3221147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 280 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 3221147 is about 1794.7554150914. The cubic root of 3221147 is about 147.6851567315.

The spelling of 3221147 in words is "three million, two hundred twenty-one thousand, one hundred forty-seven".