10211210010121 has 2 divisors, whose sum is σ = 10211210010122. Its totient is φ = 10211210010120.

The previous prime is 10211210010073. The next prime is 10211210010149. The reversal of 10211210010121 is 12101001211201.

It is a happy number.

10211210010121 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., 9524698336521 + 686511673600 = 3086211^2 + 828560^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211210010121 - 2⁷ = 10211210009993 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211210610121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105605005060 + 5105605005061.

It is an arithmetic number, because the mean of its divisors is an integer number (5105605005061).

Almost surely, 2^{10211210010121} is an apocalyptic number.

It is an amenable number.

10211210010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211210010121 is an equidigital number, since it uses as much as digits as its factorization.

10211210010121 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 10211210010121 its reverse (12101001211201), we get a palindrome (22312211221322).

The spelling of 10211210010121 in words is "ten trillion, two hundred eleven billion, two hundred ten million, ten thousand, one hundred twenty-one".