20301021289 has 2 divisors, whose sum is σ = 20301021290. Its totient is φ = 20301021288.

The previous prime is 20301021283. The next prime is 20301021331. The reversal of 20301021289 is 98212010302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15848795664 + 4452225625 = 125892^2 + 66725^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301021289 - 2⁷ = 20301021161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20301021283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150510644 + 10150510645.

It is an arithmetic number, because the mean of its divisors is an integer number (10150510645).

Almost surely, 2^20301021289 is an apocalyptic number.

It is an amenable number.

20301021289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20301021289 is an equidigital number, since it uses as much as digits as its factorization.

20301021289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 20301021289 in words is "twenty billion, three hundred one million, twenty-one thousand, two hundred eighty-nine".