211322031113 has 2 divisors, whose sum is σ = 211322031114. Its totient is φ = 211322031112.

The previous prime is 211322031073. The next prime is 211322031133. The reversal of 211322031113 is 311130223112.

It is a happy number.

It is an a-pointer prime, because the next prime (211322031133) can be obtained adding 211322031113 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203533615609 + 7788415504 = 451147^2 + 88252^2 .

It is a cyclic number.

It is not a de Polignac number, because 211322031113 - 2¹⁶ = 211321965577 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 (211322031133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105661015556 + 105661015557.

It is an arithmetic number, because the mean of its divisors is an integer number (105661015557).

Almost surely, 2^211322031113 is an apocalyptic number.

It is an amenable number.

211322031113 is a deficient number, since it is larger than the sum of its proper divisors (1).

211322031113 is an equidigital number, since it uses as much as digits as its factorization.

211322031113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211322031113 its reverse (311130223112), we get a palindrome (522452254225).

The spelling of 211322031113 in words is "two hundred eleven billion, three hundred twenty-two million, thirty-one thousand, one hundred thirteen".