211121020110121 has 16 divisors (see below), whose sum is σ = 230660767891008. Its totient is φ = 191639105280000.

The previous prime is 211121020110109. The next prime is 211121020110127. The reversal of 211121020110121 is 121011020121112.

It is a cyclic number.

It is not a de Polignac number, because 211121020110121 - 2¹⁷ = 211121019979049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211121020110095 and 211121020110104.

It is not an unprimeable number, because it can be changed into a prime (211121020110127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399505350 + ... + 400033456.

It is an arithmetic number, because the mean of its divisors is an integer number (14416297993188).

Almost surely, 2^{211121020110121} is an apocalyptic number.

It is an amenable number.

211121020110121 is a deficient number, since it is larger than the sum of its proper divisors (19539747780887).

211121020110121 is a wasteful number, since it uses less digits than its factorization.

211121020110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582792.

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

Adding to 211121020110121 its reverse (121011020121112), we get a palindrome (332132040231233).

The spelling of 211121020110121 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty million, one hundred ten thousand, one hundred twenty-one".