211311033232021 has 2 divisors, whose sum is σ = 211311033232022. Its totient is φ = 211311033232020.

The previous prime is 211311033231959. The next prime is 211311033232037. The reversal of 211311033232021 is 120232330113112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172696131132100 + 38614902099921 = 13141390^2 + 6214089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211311033232021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211311033232121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105655516616010 + 105655516616011.

It is an arithmetic number, because the mean of its divisors is an integer number (105655516616011).

Almost surely, 2^{211311033232021} is an apocalyptic number.

It is an amenable number.

211311033232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211311033232021 is an equidigital number, since it uses as much as digits as its factorization.

211311033232021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 211311033232021 its reverse (120232330113112), we get a palindrome (331543363345133).

The spelling of 211311033232021 in words is "two hundred eleven trillion, three hundred eleven billion, thirty-three million, two hundred thirty-two thousand, twenty-one".