211113232121 has 32 divisors (see below), whose sum is σ = 236920553856. Its totient is φ = 186500160000.

The previous prime is 211113232103. The next prime is 211113232133. The reversal of 211113232121 is 121232311112.

211113232121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-211113232121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211113232093 and 211113232102.

It is not an unprimeable number, because it can be changed into a prime (211113232151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20911751 + ... + 20921843.

It is an arithmetic number, because the mean of its divisors is an integer number (7403767308).

Almost surely, 2^211113232121 is an apocalyptic number.

It is an amenable number.

211113232121 is a deficient number, since it is larger than the sum of its proper divisors (25807321735).

211113232121 is a wasteful number, since it uses less digits than its factorization.

211113232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553.

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

Adding to 211113232121 its reverse (121232311112), we get a palindrome (332345543233).

The spelling of 211113232121 in words is "two hundred eleven billion, one hundred thirteen million, two hundred thirty-two thousand, one hundred twenty-one".