212103320110121 has 4 divisors (see below), whose sum is σ = 231385440120144. Its totient is φ = 192821200100100.

The previous prime is 212103320110111. The next prime is 212103320110133. The reversal of 212103320110121 is 121011023301212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212103320110121 - 2¹⁰ = 212103320109097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212103320110093 and 212103320110102.

It is not an unprimeable number, because it can be changed into a prime (212103320110111) 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 3 ways as a sum of consecutive naturals, for example, 9641060004995 + ... + 9641060005016.

It is an arithmetic number, because the mean of its divisors is an integer number (57846360030036).

Almost surely, 2^{212103320110121} is an apocalyptic number.

It is an amenable number.

212103320110121 is a deficient number, since it is larger than the sum of its proper divisors (19282120010023).

212103320110121 is a wasteful number, since it uses less digits than its factorization.

212103320110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19282120010022.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 212103320110121 its reverse (121011023301212), we get a palindrome (333114343411333).

The spelling of 212103320110121 in words is "two hundred twelve trillion, one hundred three billion, three hundred twenty million, one hundred ten thousand, one hundred twenty-one".