121203412 has 72 divisors (see below), whose sum is σ = 250256160. Its totient is φ = 50850240.

The previous prime is 121203403. The next prime is 121203419. The reversal of 121203412 is 214302121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121203419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2578773 + ... + 2578819.

It is an arithmetic number, because the mean of its divisors is an integer number (3475780).

Almost surely, 2^121203412 is an apocalyptic number.

It is an amenable number.

121203412 is an abundant number, since it is smaller than the sum of its proper divisors (129052748).

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

121203412 is a wasteful number, since it uses less digits than its factorization.

121203412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121203412 is about 11009.2421174212. The cubic root of 121203412 is about 494.8857499135.

Adding to 121203412 its reverse (214302121), we get a palindrome (335505533).

The spelling of 121203412 in words is "one hundred twenty-one million, two hundred three thousand, four hundred twelve".