21011041334189 has 2 divisors, whose sum is σ = 21011041334190. Its totient is φ = 21011041334188.

The previous prime is 21011041334167. The next prime is 21011041334203. The reversal of 21011041334189 is 98143314011012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20470801634089 + 540239700100 = 4524467^2 + 735010^2 .

It is a cyclic number.

It is not a de Polignac number, because 21011041334189 - 2¹⁶ = 21011041268653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21011071334189) 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, 10505520667094 + 10505520667095.

It is an arithmetic number, because the mean of its divisors is an integer number (10505520667095).

Almost surely, 2^{21011041334189} is an apocalyptic number.

It is an amenable number.

21011041334189 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011041334189 is an equidigital number, since it uses as much as digits as its factorization.

21011041334189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 21011041334189 in words is "twenty-one trillion, eleven billion, forty-one million, three hundred thirty-four thousand, one hundred eighty-nine".