30212133528481 has 2 divisors, whose sum is σ = 30212133528482. Its totient is φ = 30212133528480.

The previous prime is 30212133528439. The next prime is 30212133528509. The reversal of 30212133528481 is 18482533121203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25632602008225 + 4579531520256 = 5062865^2 + 2139984^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212133528481 - 2³³ = 30203543593889 is a prime.

It is a super-2 number, since 2×30212133528481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30212133526481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106066764240 + 15106066764241.

It is an arithmetic number, because the mean of its divisors is an integer number (15106066764241).

Almost surely, 2^{30212133528481} is an apocalyptic number.

It is an amenable number.

30212133528481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30212133528481 is an equidigital number, since it uses as much as digits as its factorization.

30212133528481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

Adding to 30212133528481 its reverse (18482533121203), we get a palindrome (48694666649684).

The spelling of 30212133528481 in words is "thirty trillion, two hundred twelve billion, one hundred thirty-three million, five hundred twenty-eight thousand, four hundred eighty-one".