2220332021 has 4 divisors (see below), whose sum is σ = 2262225132. Its totient is φ = 2178438912.

The previous prime is 2220331991. The next prime is 2220332027. The reversal of 2220332021 is 1202330222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 749992996 + 1470339025 = 27386^2 + 38345^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220332021 - 2⁶ = 2220331957 is a prime.

It is a super-3 number, since 3×2220332021³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220332027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20946476 + ... + 20946581.

It is an arithmetic number, because the mean of its divisors is an integer number (565556283).

Almost surely, 2^2220332021 is an apocalyptic number.

It is an amenable number.

2220332021 is a deficient number, since it is larger than the sum of its proper divisors (41893111).

2220332021 is an equidigital number, since it uses as much as digits as its factorization.

2220332021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41893110.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2220332021 is about 47120.3992024686. The cubic root of 2220332021 is about 1304.5857810554.

Adding to 2220332021 its reverse (1202330222), we get a palindrome (3422662243).

The spelling of 2220332021 in words is "two billion, two hundred twenty million, three hundred thirty-two thousand, twenty-one".