211002010122121 has 2 divisors, whose sum is σ = 211002010122122. Its totient is φ = 211002010122120.

The previous prime is 211002010122089. The next prime is 211002010122131. The reversal of 211002010122121 is 121221010200112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204880290049600 + 6121720072521 = 14313640^2 + 2474211^2 .

It is a cyclic number.

It is not a de Polignac number, because 211002010122121 - 2⁵ = 211002010122089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211002010122095 and 211002010122104.

It is not a weakly prime, because it can be changed into another prime (211002010122131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501005061060 + 105501005061061.

It is an arithmetic number, because the mean of its divisors is an integer number (105501005061061).

Almost surely, 2^{211002010122121} is an apocalyptic number.

It is an amenable number.

211002010122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211002010122121 is an equidigital number, since it uses as much as digits as its factorization.

211002010122121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211002010122121 its reverse (121221010200112), we get a palindrome (332223020322233).

The spelling of 211002010122121 in words is "two hundred eleven trillion, two billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".