3003220021 has 4 divisors (see below), whose sum is σ = 3008119852. Its totient is φ = 2998320192.

The previous prime is 3003220001. The next prime is 3003220043. The reversal of 3003220021 is 1200223003.

It is a happy number.

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 90459121 + 2912760900 = 9511^2 + 53970^2 .

It is a cyclic number.

It is not a de Polignac number, because 3003220021 - 2¹⁹ = 3002695733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3003219983 and 3003220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3003220001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2448996 + ... + 2450221.

It is an arithmetic number, because the mean of its divisors is an integer number (752029963).

Almost surely, 2^3003220021 is an apocalyptic number.

It is an amenable number.

3003220021 is a deficient number, since it is larger than the sum of its proper divisors (4899831).

3003220021 is an equidigital number, since it uses as much as digits as its factorization.

3003220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899830.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3003220021 is about 54801.6425027572. The cubic root of 3003220021 is about 1442.7653940115.

Adding to 3003220021 its reverse (1200223003), we get a palindrome (4203443024).

The spelling of 3003220021 in words is "three billion, three million, two hundred twenty thousand, twenty-one".