30001022081 has 2 divisors, whose sum is σ = 30001022082. Its totient is φ = 30001022080.

The previous prime is 30001022069. The next prime is 30001022089. The reversal of 30001022081 is 18022010003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18426705025 + 11574317056 = 135745^2 + 107584^2 .

It is an emirp because it is prime and its reverse (18022010003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30001022081 is a prime.

It is a super-2 number, since 2×30001022081² (a number of 22 digits) contains 22 as substring.

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 (30001022089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000511040 + 15000511041.

It is an arithmetic number, because the mean of its divisors is an integer number (15000511041).

Almost surely, 2^30001022081 is an apocalyptic number.

It is an amenable number.

30001022081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30001022081 is an equidigital number, since it uses as much as digits as its factorization.

30001022081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 30001022081 its reverse (18022010003), we get a palindrome (48023032084).

The spelling of 30001022081 in words is "thirty billion, one million, twenty-two thousand, eighty-one".