211010121000121 has 2 divisors, whose sum is σ = 211010121000122. Its totient is φ = 211010121000120.

The previous prime is 211010121000089. The next prime is 211010121000143. The reversal of 211010121000121 is 121000121010112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136800252314896 + 74209868685225 = 11696164^2 + 8614515^2 .

It is a cyclic number.

It is not a de Polignac number, because 211010121000121 - 2⁵ = 211010121000089 is a prime.

It is not a weakly prime, because it can be changed into another prime (211010121007121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505060500060 + 105505060500061.

It is an arithmetic number, because the mean of its divisors is an integer number (105505060500061).

Almost surely, 2^{211010121000121} is an apocalyptic number.

It is an amenable number.

211010121000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010121000121 is an equidigital number, since it uses as much as digits as its factorization.

211010121000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211010121000121 its reverse (121000121010112), we get a palindrome (332010242010233).

Subtracting from 211010121000121 its reverse (121000121010112), we obtain a palindrome (90009999990009).

The spelling of 211010121000121 in words is "two hundred eleven trillion, ten billion, one hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.