12226220144 has 20 divisors (see below), whose sum is σ = 23696917824. Its totient is φ = 6110886528.

The previous prime is 12226220141. The next prime is 12226220177. The reversal of 12226220144 is 44102262221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226220141) 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, 93152 + ... + 182015.

Almost surely, 2^12226220144 is an apocalyptic number.

It is an amenable number.

12226220144 is a deficient number, since it is larger than the sum of its proper divisors (11470697680).

12226220144 is a wasteful number, since it uses less digits than its factorization.

12226220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277952 (or 277946 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12226220144 its reverse (44102262221), we get a palindrome (56328482365).

The spelling of 12226220144 in words is "twelve billion, two hundred twenty-six million, two hundred twenty thousand, one hundred forty-four".