20120334881 has 2 divisors, whose sum is σ = 20120334882. Its totient is φ = 20120334880.

The previous prime is 20120334877. The next prime is 20120334889. The reversal of 20120334881 is 18843302102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15610003600 + 4510331281 = 124940^2 + 67159^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120334881 - 2² = 20120334877 is a prime.

It is a super-2 number, since 2×20120334881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20120334889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060167440 + 10060167441.

It is an arithmetic number, because the mean of its divisors is an integer number (10060167441).

Almost surely, 2^20120334881 is an apocalyptic number.

It is an amenable number.

20120334881 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120334881 is an equidigital number, since it uses as much as digits as its factorization.

20120334881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

Adding to 20120334881 its reverse (18843302102), we get a palindrome (38963636983).

The spelling of 20120334881 in words is "twenty billion, one hundred twenty million, three hundred thirty-four thousand, eight hundred eighty-one".