3220021533 has 8 divisors (see below), whose sum is σ = 4409399008. Its totient is φ = 2088662544.

The previous prime is 3220021531. The next prime is 3220021577. The reversal of 3220021533 is 3351200223.

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

It is not a de Polignac number, because 3220021533 - 2¹ = 3220021531 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 (3220021531) 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, 14504491 + ... + 14504712.

It is an arithmetic number, because the mean of its divisors is an integer number (551174876).

Almost surely, 2^3220021533 is an apocalyptic number.

It is an amenable number.

3220021533 is a deficient number, since it is larger than the sum of its proper divisors (1189377475).

3220021533 is a wasteful number, since it uses less digits than its factorization.

3220021533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29009243.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 3220021533 is about 56745.2335707591. The cubic root of 3220021533 is about 1476.6795435683.

Adding to 3220021533 its reverse (3351200223), we get a palindrome (6571221756).

The spelling of 3220021533 in words is "three billion, two hundred twenty million, twenty-one thousand, five hundred thirty-three".