121224112404 has 24 divisors (see below), whose sum is σ = 282864123360. Its totient is φ = 40406914464.

The previous prime is 121224112277. The next prime is 121224112421. The reversal of 121224112404 is 404211422121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389362 + ... + 627734.

It is an arithmetic number, because the mean of its divisors is an integer number (11786005140).

Almost surely, 2^121224112404 is an apocalyptic number.

It is an amenable number.

121224112404 is an abundant number, since it is smaller than the sum of its proper divisors (161640010956).

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

121224112404 is a wasteful number, since it uses less digits than its factorization.

121224112404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280759 (or 280757 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 121224112404 its reverse (404211422121), we get a palindrome (525435534525).

The spelling of 121224112404 in words is "one hundred twenty-one billion, two hundred twenty-four million, one hundred twelve thousand, four hundred four".