2011233323081 has 2 divisors, whose sum is σ = 2011233323082. Its totient is φ = 2011233323080.

The previous prime is 2011233322981. The next prime is 2011233323123. The reversal of 2011233323081 is 1803233321102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1507014036025 + 504219287056 = 1227605^2 + 710084^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011233323081 - 2²⁶ = 2011166214217 is a prime.

It is a super-2 number, since 2×2011233323081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2011233325081) 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, 1005616661540 + 1005616661541.

It is an arithmetic number, because the mean of its divisors is an integer number (1005616661541).

Almost surely, 2^{2011233323081} is an apocalyptic number.

It is an amenable number.

2011233323081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011233323081 is an equidigital number, since it uses as much as digits as its factorization.

2011233323081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 2011233323081 its reverse (1803233321102), we get a palindrome (3814466644183).

The spelling of 2011233323081 in words is "two trillion, eleven billion, two hundred thirty-three million, three hundred twenty-three thousand, eighty-one".