20120334281 has 2 divisors, whose sum is σ = 20120334282. Its totient is φ = 20120334280.

The previous prime is 20120334217. The next prime is 20120334323. The reversal of 20120334281 is 18243302102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18355914256 + 1764420025 = 135484^2 + 42005^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120334281 - 2⁶ = 20120334217 is a prime.

It is a super-2 number, since 2×20120334281² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120334281.

It is not a weakly prime, because it can be changed into another prime (20120334881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060167140 + 10060167141.

It is an arithmetic number, because the mean of its divisors is an integer number (10060167141).

Almost surely, 2^20120334281 is an apocalyptic number.

It is an amenable number.

20120334281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120334281 is an equidigital number, since it uses as much as digits as its factorization.

20120334281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20120334281 its reverse (18243302102), we get a palindrome (38363636383).

The spelling of 20120334281 in words is "twenty billion, one hundred twenty million, three hundred thirty-four thousand, two hundred eighty-one".