10211121221071 has 2 divisors, whose sum is σ = 10211121221072. Its totient is φ = 10211121221070.

The previous prime is 10211121220907. The next prime is 10211121221261. The reversal of 10211121221071 is 17012212111201.

10211121221071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211121221071 - 2²⁵ = 10211087666639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211121228071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105560610535 + 5105560610536.

It is an arithmetic number, because the mean of its divisors is an integer number (5105560610536).

Almost surely, 2^{10211121221071} is an apocalyptic number.

10211121221071 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211121221071 is an equidigital number, since it uses as much as digits as its factorization.

10211121221071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 10211121221071 its reverse (17012212111201), we get a palindrome (27223333332272).

The spelling of 10211121221071 in words is "ten trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, seventy-one".