121043412 has 72 divisors (see below), whose sum is σ = 352107392. Its totient is φ = 34344000.

The previous prime is 121043407. The next prime is 121043423. The reversal of 121043412 is 214340121.

121043412 is a `hidden beast` number, since 1 + 210 + 43 + 412 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36462 + ... + 39642.

Almost surely, 2^121043412 is an apocalyptic number.

121043412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121043412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176053696).

121043412 is an abundant number, since it is smaller than the sum of its proper divisors (231063980).

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

121043412 is a wasteful number, since it uses less digits than its factorization.

121043412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121043412 is about 11001.9730957679. The cubic root of 121043412 is about 494.6678886429.

Adding to 121043412 its reverse (214340121), we get a palindrome (335383533).

The spelling of 121043412 in words is "one hundred twenty-one million, forty-three thousand, four hundred twelve".