121204400 has 30 divisors (see below), whose sum is σ = 291194532. Its totient is φ = 48481600.

The previous prime is 121204393. The next prime is 121204417. The reversal of 121204400 is 4402121.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151106 + ... + 151905.

Almost surely, 2^121204400 is an apocalyptic number.

121204400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121204400 is an abundant number, since it is smaller than the sum of its proper divisors (169990132).

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

121204400 is a wasteful number, since it uses less digits than its factorization.

121204400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303029 (or 303018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 121204400 is about 11009.2869887200. The cubic root of 121204400 is about 494.8870946110.

Adding to 121204400 its reverse (4402121), we get a palindrome (125606521).

The spelling of 121204400 in words is "one hundred twenty-one million, two hundred four thousand, four hundred".