20334020281 has 2 divisors, whose sum is σ = 20334020282. Its totient is φ = 20334020280.

The previous prime is 20334020237. The next prime is 20334020293. The reversal of 20334020281 is 18202043302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19893692025 + 440328256 = 141045^2 + 20984^2 .

It is a cyclic number.

It is not a de Polignac number, because 20334020281 - 2¹³ = 20334012089 is a prime.

It is a super-2 number, since 2×20334020281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20334020981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167010140 + 10167010141.

It is an arithmetic number, because the mean of its divisors is an integer number (10167010141).

Almost surely, 2^20334020281 is an apocalyptic number.

It is an amenable number.

20334020281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334020281 is an equidigital number, since it uses as much as digits as its factorization.

20334020281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20334020281 its reverse (18202043302), we get a palindrome (38536063583).

The spelling of 20334020281 in words is "twenty billion, three hundred thirty-four million, twenty thousand, two hundred eighty-one".