211043131121 has 24 divisors (see below), whose sum is σ = 222386284224. Its totient is φ = 200216399040.

The previous prime is 211043131111. The next prime is 211043131129. The reversal of 211043131121 is 121131340112.

211043131121 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-211043131121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211043131093 and 211043131102.

It is not an unprimeable number, because it can be changed into a prime (211043131129) 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 23 ways as a sum of consecutive naturals, for example, 74231126 + ... + 74233968.

It is an arithmetic number, because the mean of its divisors is an integer number (9266095176).

Almost surely, 2^211043131121 is an apocalyptic number.

It is an amenable number.

211043131121 is a deficient number, since it is larger than the sum of its proper divisors (11343153103).

211043131121 is a wasteful number, since it uses less digits than its factorization.

211043131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409 (or 4380 counting only the distinct ones).

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

Adding to 211043131121 its reverse (121131340112), we get a palindrome (332174471233).

The spelling of 211043131121 in words is "two hundred eleven billion, forty-three million, one hundred thirty-one thousand, one hundred twenty-one".