20211001073 has 2 divisors, whose sum is σ = 20211001074. Its totient is φ = 20211001072.

The previous prime is 20211001067. The next prime is 20211001201. The reversal of 20211001073 is 37010011202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20144692624 + 66308449 = 141932^2 + 8143^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211001073 - 2¹⁰ = 20211000049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211001003) 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, 10105500536 + 10105500537.

It is an arithmetic number, because the mean of its divisors is an integer number (10105500537).

Almost surely, 2^20211001073 is an apocalyptic number.

It is an amenable number.

20211001073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211001073 is an equidigital number, since it uses as much as digits as its factorization.

20211001073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

Adding to 20211001073 its reverse (37010011202), we get a palindrome (57221012275).

The spelling of 20211001073 in words is "twenty billion, two hundred eleven million, one thousand, seventy-three".