3201221006 has 32 divisors (see below), whose sum is σ = 5384620800. Its totient is φ = 1419428736.

The previous prime is 3201220987. The next prime is 3201221011. The reversal of 3201221006 is 6001221023.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21845 + ... + 82943.

It is an arithmetic number, because the mean of its divisors is an integer number (168269400).

Almost surely, 2^3201221006 is an apocalyptic number.

3201221006 is a deficient number, since it is larger than the sum of its proper divisors (2183399794).

3201221006 is a wasteful number, since it uses less digits than its factorization.

3201221006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61208.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3201221006 is about 56579.3337359146. Note that the first 3 decimals coincide. The cubic root of 3201221006 is about 1473.8000016463.

Adding to 3201221006 its sum of digits (17), we get a palindrome (3201221023).

Adding to 3201221006 its reverse (6001221023), we get a palindrome (9202442029).

The spelling of 3201221006 in words is "three billion, two hundred one million, two hundred twenty-one thousand, six".