2011882782521 has 2 divisors, whose sum is σ = 2011882782522. Its totient is φ = 2011882782520.

The previous prime is 2011882782517. The next prime is 2011882782523. The reversal of 2011882782521 is 1252872881102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1731300692521 + 280582090000 = 1315789^2 + 529700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011882782521 - 2² = 2011882782517 is a prime.

Together with 2011882782523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2011882782523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005941391260 + 1005941391261.

It is an arithmetic number, because the mean of its divisors is an integer number (1005941391261).

Almost surely, 2^{2011882782521} is an apocalyptic number.

It is an amenable number.

2011882782521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011882782521 is an equidigital number, since it uses as much as digits as its factorization.

2011882782521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 286720, while the sum is 47.

The spelling of 2011882782521 in words is "two trillion, eleven billion, eight hundred eighty-two million, seven hundred eighty-two thousand, five hundred twenty-one".