30221562997 has 2 divisors, whose sum is σ = 30221562998. Its totient is φ = 30221562996.

The previous prime is 30221562971. The next prime is 30221563033. The reversal of 30221562997 is 79926512203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22210238961 + 8011324036 = 149031^2 + 89506^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221562997 - 2²⁷ = 30087345269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221562797) 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, 15110781498 + 15110781499.

It is an arithmetic number, because the mean of its divisors is an integer number (15110781499).

Almost surely, 2^30221562997 is an apocalyptic number.

It is an amenable number.

30221562997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221562997 is an equidigital number, since it uses as much as digits as its factorization.

30221562997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 30221562997 in words is "thirty billion, two hundred twenty-one million, five hundred sixty-two thousand, nine hundred ninety-seven".