3208106221 has 4 divisors (see below), whose sum is σ = 3208312512. Its totient is φ = 3207899932.

The previous prime is 3208106189. The next prime is 3208106249. The reversal of 3208106221 is 1226018023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1226018023 = 4817 ⋅254519.

It is a cyclic number.

It is not a de Polignac number, because 3208106221 - 2⁵ = 3208106189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3208106521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77731 + ... + 111616.

It is an arithmetic number, because the mean of its divisors is an integer number (802078128).

Almost surely, 2^3208106221 is an apocalyptic number.

It is an amenable number.

3208106221 is a deficient number, since it is larger than the sum of its proper divisors (206291).

3208106221 is a wasteful number, since it uses less digits than its factorization.

3208106221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206290.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 3208106221 is about 56640.1467247393. The cubic root of 3208106221 is about 1474.8558657972.

The spelling of 3208106221 in words is "three billion, two hundred eight million, one hundred six thousand, two hundred twenty-one".