3221159666 has 8 divisors (see below), whose sum is σ = 4899792384. Its totient is φ = 1587895540.

The previous prime is 3221159663. The next prime is 3221159671. The reversal of 3221159666 is 6669511223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3221159663) 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, 11341970 + ... + 11342253.

It is an arithmetic number, because the mean of its divisors is an integer number (612474048).

Almost surely, 2^3221159666 is an apocalyptic number.

3221159666 is a deficient number, since it is larger than the sum of its proper divisors (1678632718).

3221159666 is a wasteful number, since it uses less digits than its factorization.

3221159666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22684296.

The product of its digits is 116640, while the sum is 41.

The square root of 3221159666 is about 56755.2611305771. The cubic root of 3221159666 is about 1476.8535030412.

The spelling of 3221159666 in words is "three billion, two hundred twenty-one million, one hundred fifty-nine thousand, six hundred sixty-six".