11211021020071 has 2 divisors, whose sum is σ = 11211021020072. Its totient is φ = 11211021020070.

The previous prime is 11211021020051. The next prime is 11211021020117. The reversal of 11211021020071 is 17002012011211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11211021020071 - 2⁵ = 11211021020039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211021020051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605510510035 + 5605510510036.

It is an arithmetic number, because the mean of its divisors is an integer number (5605510510036).

Almost surely, 2^{11211021020071} is an apocalyptic number.

11211021020071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211021020071 is an equidigital number, since it uses as much as digits as its factorization.

11211021020071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 11211021020071 its reverse (17002012011211), we get a palindrome (28213033031282).

The spelling of 11211021020071 in words is "eleven trillion, two hundred eleven billion, twenty-one million, twenty thousand, seventy-one".