211130123 has 4 divisors (see below), whose sum is σ = 223549560. Its totient is φ = 198710688.

The previous prime is 211130093. The next prime is 211130131. The reversal of 211130123 is 321031112.

211130123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 211130123 - 2¹⁴ = 211113739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211130098 and 211130107.

It is not an unprimeable number, because it can be changed into a prime (211130173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6209693 + ... + 6209726.

It is an arithmetic number, because the mean of its divisors is an integer number (55887390).

Almost surely, 2^211130123 is an apocalyptic number.

211130123 is a deficient number, since it is larger than the sum of its proper divisors (12419437).

211130123 is a wasteful number, since it uses less digits than its factorization.

211130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12419436.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 211130123 is about 14530.3173743728. The cubic root of 211130123 is about 595.4565363702.

Adding to 211130123 its reverse (321031112), we get a palindrome (532161235).

The spelling of 211130123 in words is "two hundred eleven million, one hundred thirty thousand, one hundred twenty-three".