30291039021281 has 2 divisors, whose sum is σ = 30291039021282. Its totient is φ = 30291039021280.

The previous prime is 30291039021259. The next prime is 30291039021343. The reversal of 30291039021281 is 18212093019203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27902904582400 + 2388134438881 = 5282320^2 + 1545359^2 .

It is a cyclic number.

It is not a de Polignac number, because 30291039021281 - 2³⁸ = 30016161114337 is a prime.

It is a super-2 number, since 2×30291039021281² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30291039023281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15145519510640 + 15145519510641.

It is an arithmetic number, because the mean of its divisors is an integer number (15145519510641).

Almost surely, 2^{30291039021281} is an apocalyptic number.

It is an amenable number.

30291039021281 is a deficient number, since it is larger than the sum of its proper divisors (1).

30291039021281 is an equidigital number, since it uses as much as digits as its factorization.

30291039021281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 30291039021281 in words is "thirty trillion, two hundred ninety-one billion, thirty-nine million, twenty-one thousand, two hundred eighty-one".