2011240433021 has 2 divisors, whose sum is σ = 2011240433022. Its totient is φ = 2011240433020.

The previous prime is 2011240433011. The next prime is 2011240433023. The reversal of 2011240433021 is 1203340421102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1699138320100 + 312102112921 = 1303510^2 + 558661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011240433021 is a prime.

Together with 2011240433023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011240433023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005620216510 + 1005620216511.

It is an arithmetic number, because the mean of its divisors is an integer number (1005620216511).

Almost surely, 2^{2011240433021} is an apocalyptic number.

It is an amenable number.

2011240433021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011240433021 is an equidigital number, since it uses as much as digits as its factorization.

2011240433021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2011240433021 its reverse (1203340421102), we get a palindrome (3214580854123).

The spelling of 2011240433021 in words is "two trillion, eleven billion, two hundred forty million, four hundred thirty-three thousand, twenty-one".