3003121021 has 8 divisors (see below), whose sum is σ = 3112586840. Its totient is φ = 2895144768.

The previous prime is 3003121007. The next prime is 3003121027. The reversal of 3003121021 is 1201213003.

It can be written as a sum of positive squares in 4 ways, for example, as 659205625 + 2343915396 = 25675^2 + 48414^2 .

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 3003121021 - 2⁷ = 3003120893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3003120992 and 3003121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3003121027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368286 + ... + 376351.

It is an arithmetic number, because the mean of its divisors is an integer number (389073355).

Almost surely, 2^3003121021 is an apocalyptic number.

It is an amenable number.

3003121021 is a deficient number, since it is larger than the sum of its proper divisors (109465819).

3003121021 is a wasteful number, since it uses less digits than its factorization.

3003121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744783.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3003121021 is about 54800.7392377147. The cubic root of 3003121021 is about 1442.7495404340.

Adding to 3003121021 its reverse (1201213003), we get a palindrome (4204334024).

The spelling of 3003121021 in words is "three billion, three million, one hundred twenty-one thousand, twenty-one".