3023221021 has 2 divisors, whose sum is σ = 3023221022. Its totient is φ = 3023221020.

The previous prime is 3023221009. The next prime is 3023221063. The reversal of 3023221021 is 1201223203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2436903225 + 586317796 = 49365^2 + 24214^2 .

It is a cyclic number.

It is not a de Polignac number, because 3023221021 - 2¹¹ = 3023218973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3023220986 and 3023221004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3023221321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1511610510 + 1511610511.

It is an arithmetic number, because the mean of its divisors is an integer number (1511610511).

Almost surely, 2^3023221021 is an apocalyptic number.

It is an amenable number.

3023221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3023221021 is an equidigital number, since it uses as much as digits as its factorization.

3023221021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3023221021 is about 54983.8250852012. The cubic root of 3023221021 is about 1445.9611778541.

Adding to 3023221021 its reverse (1201223203), we get a palindrome (4224444224).

The spelling of 3023221021 in words is "three billion, twenty-three million, two hundred twenty-one thousand, twenty-one".