243411212111 has 4 divisors (see below), whose sum is σ = 243839000400. Its totient is φ = 242983423824.

The previous prime is 243411212069. The next prime is 243411212129. The reversal of 243411212111 is 111212114342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243411212111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243411217111) 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, 213893291 + ... + 213894428.

It is an arithmetic number, because the mean of its divisors is an integer number (60959750100).

Almost surely, 2^243411212111 is an apocalyptic number.

243411212111 is a deficient number, since it is larger than the sum of its proper divisors (427788289).

243411212111 is an equidigital number, since it uses as much as digits as its factorization.

243411212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427788288.

The product of its digits is 384, while the sum is 23.

Adding to 243411212111 its reverse (111212114342), we get a palindrome (354623326453).

The spelling of 243411212111 in words is "two hundred forty-three billion, four hundred eleven million, two hundred twelve thousand, one hundred eleven".