20301332281 has 2 divisors, whose sum is σ = 20301332282. Its totient is φ = 20301332280.

The previous prime is 20301332279. The next prime is 20301332333. The reversal of 20301332281 is 18223310302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10729645056 + 9571687225 = 103584^2 + 97835^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301332281 - 2¹ = 20301332279 is a prime.

It is a super-2 number, since 2×20301332281² (a number of 21 digits) contains 22 as substring.

Together with 20301332279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20301332981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150666140 + 10150666141.

It is an arithmetic number, because the mean of its divisors is an integer number (10150666141).

Almost surely, 2^20301332281 is an apocalyptic number.

It is an amenable number.

20301332281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20301332281 is an equidigital number, since it uses as much as digits as its factorization.

20301332281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20301332281 its reverse (18223310302), we get a palindrome (38524642583).

The spelling of 20301332281 in words is "twenty billion, three hundred one million, three hundred thirty-two thousand, two hundred eighty-one".