21179289301 has 2 divisors, whose sum is σ = 21179289302. Its totient is φ = 21179289300.

The previous prime is 21179289259. The next prime is 21179289331. The reversal of 21179289301 is 10398297112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10655607076 + 10523682225 = 103226^2 + 102585^2 .

It is a cyclic number.

It is not a de Polignac number, because 21179289301 - 2¹⁵ = 21179256533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21179289331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10589644650 + 10589644651.

It is an arithmetic number, because the mean of its divisors is an integer number (10589644651).

Almost surely, 2^21179289301 is an apocalyptic number.

It is an amenable number.

21179289301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21179289301 is an equidigital number, since it uses as much as digits as its factorization.

21179289301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 21179289301 in words is "twenty-one billion, one hundred seventy-nine million, two hundred eighty-nine thousand, three hundred one".