1282820503121 has 2 divisors, whose sum is σ = 1282820503122. Its totient is φ = 1282820503120.

The previous prime is 1282820503117. The next prime is 1282820503157. The reversal of 1282820503121 is 1213050282821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888662550721 + 394157952400 = 942689^2 + 627820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282820503121 - 2² = 1282820503117 is a prime.

It is a super-3 number, since 3×1282820503121³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1282820503021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641410251560 + 641410251561.

It is an arithmetic number, because the mean of its divisors is an integer number (641410251561).

Almost surely, 2^{1282820503121} is an apocalyptic number.

It is an amenable number.

1282820503121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282820503121 is an equidigital number, since it uses as much as digits as its factorization.

1282820503121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

Adding to 1282820503121 its reverse (1213050282821), we get a palindrome (2495870785942).

The spelling of 1282820503121 in words is "one trillion, two hundred eighty-two billion, eight hundred twenty million, five hundred three thousand, one hundred twenty-one".