3220143221 has 8 divisors (see below), whose sum is σ = 3360718080. Its totient is φ = 3079615792.

The previous prime is 3220143187. The next prime is 3220143229. The reversal of 3220143221 is 1223410223.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3220143221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3220143193 and 3220143202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220143229) 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, 253211 + ... + 265623.

It is an arithmetic number, because the mean of its divisors is an integer number (420089760).

Almost surely, 2^3220143221 is an apocalyptic number.

It is an amenable number.

3220143221 is a deficient number, since it is larger than the sum of its proper divisors (140574859).

3220143221 is a wasteful number, since it uses less digits than its factorization.

3220143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23715.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3220143221 is about 56746.3057916548. The cubic root of 3220143221 is about 1476.6981450916.

Adding to 3220143221 its reverse (1223410223), we get a palindrome (4443553444).

The spelling of 3220143221 in words is "three billion, two hundred twenty million, one hundred forty-three thousand, two hundred twenty-one".