12211134456 has 16 divisors (see below), whose sum is σ = 30527836200. Its totient is φ = 4070378144.

The previous prime is 12211134451. The next prime is 12211134473. The reversal of 12211134456 is 65443111221.

It is a super-2 number, since 2×12211134456² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211134451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254398611 + ... + 254398658.

Almost surely, 2^12211134456 is an apocalyptic number.

It is an amenable number.

12211134456 is an abundant number, since it is smaller than the sum of its proper divisors (18316701744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211134456 is a wasteful number, since it uses less digits than its factorization.

12211134456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508797278 (or 508797274 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 12211134456 its reverse (65443111221), we get a palindrome (77654245677).

The spelling of 12211134456 in words is "twelve billion, two hundred eleven million, one hundred thirty-four thousand, four hundred fifty-six".