30404224122581 has 2 divisors, whose sum is σ = 30404224122582. Its totient is φ = 30404224122580.

The previous prime is 30404224122553. The next prime is 30404224122739. The reversal of 30404224122581 is 18522142240403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23845554342481 + 6558669780100 = 4883191^2 + 2560990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30404224122581 is a prime.

It is a super-2 number, since 2×30404224122581² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30404224122511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15202112061290 + 15202112061291.

It is an arithmetic number, because the mean of its divisors is an integer number (15202112061291).

Almost surely, 2^{30404224122581} is an apocalyptic number.

It is an amenable number.

30404224122581 is a deficient number, since it is larger than the sum of its proper divisors (1).

30404224122581 is an equidigital number, since it uses as much as digits as its factorization.

30404224122581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 38.

Adding to 30404224122581 its reverse (18522142240403), we get a palindrome (48926366362984).

The spelling of 30404224122581 in words is "thirty trillion, four hundred four billion, two hundred twenty-four million, one hundred twenty-two thousand, five hundred eighty-one".