2821783282081 has 2 divisors, whose sum is σ = 2821783282082. Its totient is φ = 2821783282080.

The previous prime is 2821783281923. The next prime is 2821783282151. The reversal of 2821783282081 is 1802823871282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2047735242081 + 774048040000 = 1430991^2 + 879800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2821783282081 - 2¹¹ = 2821783280033 is a prime.

It is a super-2 number, since 2×2821783282081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2821787282081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410891641040 + 1410891641041.

It is an arithmetic number, because the mean of its divisors is an integer number (1410891641041).

Almost surely, 2^{2821783282081} is an apocalyptic number.

It is an amenable number.

2821783282081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821783282081 is an equidigital number, since it uses as much as digits as its factorization.

2821783282081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1376256, while the sum is 52.

The spelling of 2821783282081 in words is "two trillion, eight hundred twenty-one billion, seven hundred eighty-three million, two hundred eighty-two thousand, eighty-one".