3022720021 has 8 divisors (see below), whose sum is σ = 3053849400. Its totient is φ = 2991614400.

The previous prime is 3022719881. The next prime is 3022720031. The reversal of 3022720021 is 1200272203.

It can be written as a sum of positive squares in 4 ways, for example, as 112656996 + 2910063025 = 10614^2 + 53945^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3022720021 - 2¹³ = 3022711829 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 (3022720031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370575 + ... + 378643.

It is an arithmetic number, because the mean of its divisors is an integer number (381731175).

Almost surely, 2^3022720021 is an apocalyptic number.

It is an amenable number.

3022720021 is a deficient number, since it is larger than the sum of its proper divisors (31129379).

3022720021 is a wasteful number, since it uses less digits than its factorization.

3022720021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11879.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 3022720021 is about 54979.2690111464. The cubic root of 3022720021 is about 1445.8812998514.

Adding to 3022720021 its reverse (1200272203), we get a palindrome (4222992224).

The spelling of 3022720021 in words is "three billion, twenty-two million, seven hundred twenty thousand, twenty-one".