211020000210121 has 2 divisors, whose sum is σ = 211020000210122. Its totient is φ = 211020000210120.

The previous prime is 211020000210091. The next prime is 211020000210133. The reversal of 211020000210121 is 121012000020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209606374328521 + 1413625881600 = 14477789^2 + 1188960^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020000210121 - 2⁹ = 211020000209609 is a prime.

It is not a weakly prime, because it can be changed into another prime (211020000210821) 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, 105510000105060 + 105510000105061.

It is an arithmetic number, because the mean of its divisors is an integer number (105510000105061).

Almost surely, 2^{211020000210121} is an apocalyptic number.

It is an amenable number.

211020000210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020000210121 is an equidigital number, since it uses as much as digits as its factorization.

211020000210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211020000210121 its reverse (121012000020112), we get a palindrome (332032000230233).

The spelling of 211020000210121 in words is "two hundred eleven trillion, twenty billion, two hundred ten thousand, one hundred twenty-one".