20212100273 has 2 divisors, whose sum is σ = 20212100274. Its totient is φ = 20212100272.

The previous prime is 20212100213. The next prime is 20212100281. The reversal of 20212100273 is 37200121202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17253610609 + 2958489664 = 131353^2 + 54392^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212100273 - 2¹⁰ = 20212099249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20212100213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106050136 + 10106050137.

It is an arithmetic number, because the mean of its divisors is an integer number (10106050137).

Almost surely, 2^20212100273 is an apocalyptic number.

It is an amenable number.

20212100273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212100273 is an equidigital number, since it uses as much as digits as its factorization.

20212100273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20212100273 its reverse (37200121202), we get a palindrome (57412221475).

The spelling of 20212100273 in words is "twenty billion, two hundred twelve million, one hundred thousand, two hundred seventy-three".