121204424 has 32 divisors (see below), whose sum is σ = 262504800. Its totient is φ = 51851520.

The previous prime is 121204423. The next prime is 121204453. The reversal of 121204424 is 424402121.

It is a junction number, because it is equal to n+sod(n) for n = 121204396 and 121204405.

It is not an unprimeable number, because it can be changed into a prime (121204423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39014 + ... + 42005.

It is an arithmetic number, because the mean of its divisors is an integer number (8203275).

Almost surely, 2^121204424 is an apocalyptic number.

It is an amenable number.

121204424 is an abundant number, since it is smaller than the sum of its proper divisors (141300376).

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

121204424 is a wasteful number, since it uses less digits than its factorization.

121204424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81053 (or 81049 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 121204424 is about 11009.2880787088. The cubic root of 121204424 is about 494.8871272757.

Adding to 121204424 its reverse (424402121), we get a palindrome (545606545).

The spelling of 121204424 in words is "one hundred twenty-one million, two hundred four thousand, four hundred twenty-four".