20211022289 has 2 divisors, whose sum is σ = 20211022290. Its totient is φ = 20211022288.

The previous prime is 20211022259. The next prime is 20211022309. The reversal of 20211022289 is 98222011202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17323034689 + 2887987600 = 131617^2 + 53740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211022289 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211022259) 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, 10105511144 + 10105511145.

It is an arithmetic number, because the mean of its divisors is an integer number (10105511145).

Almost surely, 2^20211022289 is an apocalyptic number.

It is an amenable number.

20211022289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211022289 is an equidigital number, since it uses as much as digits as its factorization.

20211022289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 20211022289 in words is "twenty billion, two hundred eleven million, twenty-two thousand, two hundred eighty-nine".