3220333021 has 4 divisors (see below), whose sum is σ = 3228019200. Its totient is φ = 3212646844.

The previous prime is 3220332991. The next prime is 3220333049. The reversal of 3220333021 is 1203330223.

It is a happy number.

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: 1203330223 = 71 ⋅16948313.

It is a cyclic number.

It is not a de Polignac number, because 3220333021 - 2⁵ = 3220332989 is a prime.

It is a super-2 number, since 2×3220333021² = 20741089532285972882, which contains 22 as substring.

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 3220333021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220333121) 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, 3842461 + ... + 3843298.

It is an arithmetic number, because the mean of its divisors is an integer number (807004800).

Almost surely, 2^3220333021 is an apocalyptic number.

It is an amenable number.

3220333021 is a deficient number, since it is larger than the sum of its proper divisors (7686179).

3220333021 is an equidigital number, since it uses as much as digits as its factorization.

3220333021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7686178.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 3220333021 is about 56747.9781225728. The cubic root of 3220333021 is about 1476.7271574452.

Adding to 3220333021 its reverse (1203330223), we get a palindrome (4423663244).

The spelling of 3220333021 in words is "three billion, two hundred twenty million, three hundred thirty-three thousand, twenty-one".