211242323211 has 4 divisors (see below), whose sum is σ = 281656430952. Its totient is φ = 140828215472.

The previous prime is 211242323203. The next prime is 211242323213. The reversal of 211242323211 is 112323242112.

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

It is a cyclic number.

It is not a de Polignac number, because 211242323211 - 2³ = 211242323203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211242323213) 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, 35207053866 + ... + 35207053871.

It is an arithmetic number, because the mean of its divisors is an integer number (70414107738).

Almost surely, 2^211242323211 is an apocalyptic number.

211242323211 is a deficient number, since it is larger than the sum of its proper divisors (70414107741).

211242323211 is an equidigital number, since it uses as much as digits as its factorization.

211242323211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70414107740.

The product of its digits is 1152, while the sum is 24.

Adding to 211242323211 its reverse (112323242112), we get a palindrome (323565565323).

The spelling of 211242323211 in words is "two hundred eleven billion, two hundred forty-two million, three hundred twenty-three thousand, two hundred eleven".