211331210123 has 8 divisors (see below), whose sum is σ = 231227246640. Its totient is φ = 191549191680.

The previous prime is 211331210117. The next prime is 211331210159. The reversal of 211331210123 is 321012133112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211331210123 - 2¹⁰ = 211331209099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211331210095 and 211331210104.

It is not an unprimeable number, because it can be changed into a prime (211331210183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28500638 + ... + 28508051.

It is an arithmetic number, because the mean of its divisors is an integer number (28903405830).

Almost surely, 2^211331210123 is an apocalyptic number.

211331210123 is a deficient number, since it is larger than the sum of its proper divisors (19896036517).

211331210123 is a wasteful number, since it uses less digits than its factorization.

211331210123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57009037.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211331210123 its reverse (321012133112), we get a palindrome (532343343235).

The spelling of 211331210123 in words is "two hundred eleven billion, three hundred thirty-one million, two hundred ten thousand, one hundred twenty-three".