211420201273 has 2 divisors, whose sum is σ = 211420201274. Its totient is φ = 211420201272.

The previous prime is 211420201271. The next prime is 211420201313. The reversal of 211420201273 is 372102024112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158636517264 + 52783684009 = 398292^2 + 229747^2 .

It is a cyclic number.

It is not a de Polignac number, because 211420201273 - 2¹ = 211420201271 is a prime.

Together with 211420201271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211420201271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710100636 + 105710100637.

It is an arithmetic number, because the mean of its divisors is an integer number (105710100637).

Almost surely, 2^211420201273 is an apocalyptic number.

It is an amenable number.

211420201273 is a deficient number, since it is larger than the sum of its proper divisors (1).

211420201273 is an equidigital number, since it uses as much as digits as its factorization.

211420201273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 211420201273 its reverse (372102024112), we get a palindrome (583522225385).

The spelling of 211420201273 in words is "two hundred eleven billion, four hundred twenty million, two hundred one thousand, two hundred seventy-three".