30252022721 has 2 divisors, whose sum is σ = 30252022722. Its totient is φ = 30252022720.

The previous prime is 30252022711. The next prime is 30252022741. The reversal of 30252022721 is 12722025203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24472222096 + 5779800625 = 156436^2 + 76025^2 .

It is a cyclic number.

It is not a de Polignac number, because 30252022721 - 2⁶ = 30252022657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30252022711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15126011360 + 15126011361.

It is an arithmetic number, because the mean of its divisors is an integer number (15126011361).

Almost surely, 2^30252022721 is an apocalyptic number.

It is an amenable number.

30252022721 is a deficient number, since it is larger than the sum of its proper divisors (1).

30252022721 is an equidigital number, since it uses as much as digits as its factorization.

30252022721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 30252022721 its reverse (12722025203), we get a palindrome (42974047924).

The spelling of 30252022721 in words is "thirty billion, two hundred fifty-two million, twenty-two thousand, seven hundred twenty-one".