243212412011 has 4 divisors (see below), whose sum is σ = 243213418224. Its totient is φ = 243211405800.

The previous prime is 243212411999. The next prime is 243212412029. The reversal of 243212412011 is 110214212342.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243212412011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243212412511) 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, 102281 + ... + 704901.

It is an arithmetic number, because the mean of its divisors is an integer number (60803354556).

Almost surely, 2^243212412011 is an apocalyptic number.

243212412011 is a deficient number, since it is larger than the sum of its proper divisors (1006213).

243212412011 is an equidigital number, since it uses as much as digits as its factorization.

243212412011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006212.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 243212412011 its reverse (110214212342), we get a palindrome (353426624353).

The spelling of 243212412011 in words is "two hundred forty-three billion, two hundred twelve million, four hundred twelve thousand, eleven".