3201321221 has 8 divisors (see below), whose sum is σ = 3873867840. Its totient is φ = 2582578368.

The previous prime is 3201321197. The next prime is 3201321239. The reversal of 3201321221 is 1221231023.

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

It is a cyclic number.

It is not a de Polignac number, because 3201321221 - 2⁶ = 3201321157 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3201321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201321241) 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, 13450811 + ... + 13451048.

It is an arithmetic number, because the mean of its divisors is an integer number (484233480).

Almost surely, 2^3201321221 is an apocalyptic number.

It is an amenable number.

3201321221 is a deficient number, since it is larger than the sum of its proper divisors (672546619).

3201321221 is a wasteful number, since it uses less digits than its factorization.

3201321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26901883.

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

The square root of 3201321221 is about 56580.2193438661. The cubic root of 3201321221 is about 1473.8153807080.

Adding to 3201321221 its reverse (1221231023), we get a palindrome (4422552244).

The spelling of 3201321221 in words is "three billion, two hundred one million, three hundred twenty-one thousand, two hundred twenty-one".