211320203273 has 2 divisors, whose sum is σ = 211320203274. Its totient is φ = 211320203272.

The previous prime is 211320203209. The next prime is 211320203363. The reversal of 211320203273 is 372302023112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205832801344 + 5487401929 = 453688^2 + 74077^2 .

It is a cyclic number.

It is not a de Polignac number, because 211320203273 - 2⁶ = 211320203209 is a prime.

It is a super-2 number, since 2×211320203273² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211320203473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660101636 + 105660101637.

It is an arithmetic number, because the mean of its divisors is an integer number (105660101637).

Almost surely, 2^211320203273 is an apocalyptic number.

It is an amenable number.

211320203273 is a deficient number, since it is larger than the sum of its proper divisors (1).

211320203273 is an equidigital number, since it uses as much as digits as its factorization.

211320203273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 211320203273 its reverse (372302023112), we get a palindrome (583622226385).

The spelling of 211320203273 in words is "two hundred eleven billion, three hundred twenty million, two hundred three thousand, two hundred seventy-three".