211230341211 has 4 divisors (see below), whose sum is σ = 281640454952. Its totient is φ = 140820227472.

The previous prime is 211230341159. The next prime is 211230341279. The reversal of 211230341211 is 112143032112.

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

It is not a de Polignac number, because 211230341211 - 2¹¹ = 211230339163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211230343211) 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, 35205056866 + ... + 35205056871.

It is an arithmetic number, because the mean of its divisors is an integer number (70410113738).

Almost surely, 2^211230341211 is an apocalyptic number.

211230341211 is a deficient number, since it is larger than the sum of its proper divisors (70410113741).

211230341211 is an equidigital number, since it uses as much as digits as its factorization.

211230341211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70410113740.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211230341211 its reverse (112143032112), we get a palindrome (323373373323).

The spelling of 211230341211 in words is "two hundred eleven billion, two hundred thirty million, three hundred forty-one thousand, two hundred eleven".