211130121 has 16 divisors (see below), whose sum is σ = 294053760. Its totient is φ = 134574720.

The previous prime is 211130093. The next prime is 211130131. The reversal of 211130121 is 121031112.

It is not a de Polignac number, because 211130121 - 2²⁵ = 177575689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211130097 and 211130106.

It is not an unprimeable number, because it can be changed into a prime (211130131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2820 + ... + 20741.

It is an arithmetic number, because the mean of its divisors is an integer number (18378360).

Almost surely, 2^211130121 is an apocalyptic number.

It is an amenable number.

211130121 is a deficient number, since it is larger than the sum of its proper divisors (82923639).

211130121 is a wasteful number, since it uses less digits than its factorization.

211130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23696.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 211130121 is about 14530.3173055512. The cubic root of 211130121 is about 595.4565344900.

Adding to 211130121 its reverse (121031112), we get a palindrome (332161233).

Subtracting from 211130121 its reverse (121031112), we obtain a palindrome (90099009).

The spelling of 211130121 in words is "two hundred eleven million, one hundred thirty thousand, one hundred twenty-one".