3220233021 has 6 divisors (see below), whose sum is σ = 4651447710. Its totient is φ = 2146822008.

The previous prime is 3220233019. The next prime is 3220233067. The reversal of 3220233021 is 1203320223.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2839397796 + 380835225 = 53286^2 + 19515^2 .

It is not a de Polignac number, because 3220233021 - 2¹ = 3220233019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3220232985 and 3220233003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220233011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178901826 + ... + 178901843.

It is an arithmetic number, because the mean of its divisors is an integer number (775241285).

Almost surely, 2^3220233021 is an apocalyptic number.

It is an amenable number.

3220233021 is a deficient number, since it is larger than the sum of its proper divisors (1431214689).

3220233021 is a wasteful number, since it uses less digits than its factorization.

3220233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357803675 (or 357803672 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3220233021 is about 56747.0970270727. The cubic root of 3220233021 is about 1476.7118718373.

Adding to 3220233021 its reverse (1203320223), we get a palindrome (4423553244).

The spelling of 3220233021 in words is "three billion, two hundred twenty million, two hundred thirty-three thousand, twenty-one".