121233424 has 20 divisors (see below), whose sum is σ = 252958636. Its totient is φ = 55953792.

The previous prime is 121233421. The next prime is 121233449. The reversal of 121233424 is 424332121.

It can be written as a sum of positive squares in 2 ways, for example, as 76877824 + 44355600 = 8768^2 + 6660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121233395 and 121233404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291219 + ... + 291634.

Almost surely, 2^121233424 is an apocalyptic number.

It is an amenable number.

121233424 is an abundant number, since it is smaller than the sum of its proper divisors (131725212).

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

121233424 is a wasteful number, since it uses less digits than its factorization.

121233424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582874 (or 582868 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 121233424 is about 11010.6050696590. The cubic root of 121233424 is about 494.9265938830.

Adding to 121233424 its reverse (424332121), we get a palindrome (545565545).

The spelling of 121233424 in words is "one hundred twenty-one million, two hundred thirty-three thousand, four hundred twenty-four".