12221125542224 has 20 divisors (see below), whose sum is σ = 23686759503936. Its totient is φ = 6108413412192.

The previous prime is 12221125542221. The next prime is 12221125542251. The reversal of 12221125542224 is 42224552112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221125542221) 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, 134288024 + ... + 134378999.

Almost surely, 2^{12221125542224} is an apocalyptic number.

It is an amenable number.

12221125542224 is a deficient number, since it is larger than the sum of its proper divisors (11465633961712).

12221125542224 is a wasteful number, since it uses less digits than its factorization.

12221125542224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268669874 (or 268669868 counting only the distinct ones).

The product of its digits is 51200, while the sum is 35.

Adding to 12221125542224 its reverse (42224552112221), we get a palindrome (54445677654445).

The spelling of 12221125542224 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-five million, five hundred forty-two thousand, two hundred twenty-four".