3021003221 has 2 divisors, whose sum is σ = 3021003222. Its totient is φ = 3021003220.

The previous prime is 3021003217. The next prime is 3021003239. The reversal of 3021003221 is 1223001203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1671910321 + 1349092900 = 40889^2 + 36730^2 .

It is a cyclic number.

It is not a de Polignac number, because 3021003221 - 2² = 3021003217 is a prime.

It is a super-2 number, since 2×3021003221² = 18252920922584749682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3021003196 and 3021003205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3021003421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1510501610 + 1510501611.

It is an arithmetic number, because the mean of its divisors is an integer number (1510501611).

Almost surely, 2^3021003221 is an apocalyptic number.

It is an amenable number.

3021003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3021003221 is an equidigital number, since it uses as much as digits as its factorization.

3021003221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3021003221 is about 54963.6536358347. The cubic root of 3021003221 is about 1445.6075112220.

Adding to 3021003221 its reverse (1223001203), we get a palindrome (4244004424).

The spelling of 3021003221 in words is "three billion, twenty-one million, three thousand, two hundred twenty-one".