211000210712021 has 2 divisors, whose sum is σ = 211000210712022. Its totient is φ = 211000210712020.

The previous prime is 211000210711991. The next prime is 211000210712149. The reversal of 211000210712021 is 120217012000112.

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., 187517803113796 + 23482407598225 = 13693714^2 + 4845865^2 .

It is a cyclic number.

It is not a de Polignac number, because 211000210712021 - 2⁴² = 206602164200917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211000210711984 and 211000210712002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211000210712321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500105356010 + 105500105356011.

It is an arithmetic number, because the mean of its divisors is an integer number (105500105356011).

Almost surely, 2^{211000210712021} is an apocalyptic number.

It is an amenable number.

211000210712021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211000210712021 is an equidigital number, since it uses as much as digits as its factorization.

211000210712021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 211000210712021 its reverse (120217012000112), we get a palindrome (331217222712133).

The spelling of 211000210712021 in words is "two hundred eleven trillion, two hundred ten million, seven hundred twelve thousand, twenty-one".