11434421211 has 32 divisors (see below), whose sum is σ = 15699840000. Its totient is φ = 7399911168.

The previous prime is 11434421209. The next prime is 11434421263. The reversal of 11434421211 is 11212443411.

It is a happy number.

It is not a de Polignac number, because 11434421211 - 2¹ = 11434421209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11434420211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6729240 + ... + 6730938.

It is an arithmetic number, because the mean of its divisors is an integer number (490620000).

Almost surely, 2^11434421211 is an apocalyptic number.

11434421211 is a deficient number, since it is larger than the sum of its proper divisors (4265418789).

11434421211 is a wasteful number, since it uses less digits than its factorization.

11434421211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243.

The product of its digits is 768, while the sum is 24.

Adding to 11434421211 its reverse (11212443411), we get a palindrome (22646864622).

The spelling of 11434421211 in words is "eleven billion, four hundred thirty-four million, four hundred twenty-one thousand, two hundred eleven".