12101010112121 has 16 divisors (see below), whose sum is σ = 14558910399360. Its totient is φ = 9825503783040.

The previous prime is 12101010112111. The next prime is 12101010112187. The reversal of 12101010112121 is 12121101010121.

It is a cyclic number.

It is not a de Polignac number, because 12101010112121 - 2¹⁰ = 12101010111097 is a prime.

It is a super-2 number, since 2×12101010112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101010112096 and 12101010112105.

It is not an unprimeable number, because it can be changed into a prime (12101010112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2583650 + ... + 5556731.

It is an arithmetic number, because the mean of its divisors is an integer number (909931899960).

Almost surely, 2^{12101010112121} is an apocalyptic number.

It is an amenable number.

12101010112121 is a deficient number, since it is larger than the sum of its proper divisors (2457900287239).

12101010112121 is a wasteful number, since it uses less digits than its factorization.

12101010112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151584.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12101010112121 its reverse (12121101010121), we get a palindrome (24222111122242).

The spelling of 12101010112121 in words is "twelve trillion, one hundred one billion, ten million, one hundred twelve thousand, one hundred twenty-one".