211120210121 has 2 divisors, whose sum is σ = 211120210122. Its totient is φ = 211120210120.

The previous prime is 211120210099. The next prime is 211120210127. The reversal of 211120210121 is 121012021112.

211120210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210979455625 + 140754496 = 459325^2 + 11864^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120210121 - 2¹⁴ = 211120193737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211120210096 and 211120210105.

It is not a weakly prime, because it can be changed into another prime (211120210127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560105060 + 105560105061.

It is an arithmetic number, because the mean of its divisors is an integer number (105560105061).

Almost surely, 2^211120210121 is an apocalyptic number.

It is an amenable number.

211120210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120210121 is an equidigital number, since it uses as much as digits as its factorization.

211120210121 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 14.

Adding to 211120210121 its reverse (121012021112), we get a palindrome (332132231233).

The spelling of 211120210121 in words is "two hundred eleven billion, one hundred twenty million, two hundred ten thousand, one hundred twenty-one".