12216236044 has 12 divisors (see below), whose sum is σ = 21388790304. Its totient is φ = 6105153104.

The previous prime is 12216236033. The next prime is 12216236047. The reversal of 12216236044 is 44063261221.

It is a junction number, because it is equal to n+sod(n) for n = 12216235997 and 12216236015.

It is not an unprimeable number, because it can be changed into a prime (12216236047) 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, 731947 + ... + 748450.

It is an arithmetic number, because the mean of its divisors is an integer number (1782399192).

Almost surely, 2^12216236044 is an apocalyptic number.

It is an amenable number.

12216236044 is a deficient number, since it is larger than the sum of its proper divisors (9172554260).

12216236044 is a wasteful number, since it uses less digits than its factorization.

12216236044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482464 (or 1482462 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 12216236044 its reverse (44063261221), we get a palindrome (56279497265).

The spelling of 12216236044 in words is "twelve billion, two hundred sixteen million, two hundred thirty-six thousand, forty-four".