121443648 has 112 divisors (see below), whose sum is σ = 352226880. Its totient is φ = 36757504.

The previous prime is 121443607. The next prime is 121443659. The reversal of 121443648 is 846344121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94015 + ... + 95297.

Almost surely, 2^121443648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121443648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176113440).

121443648 is an abundant number, since it is smaller than the sum of its proper divisors (230783232).

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

121443648 is a wasteful number, since it uses less digits than its factorization.

With its successor (121443649) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (1344).

121443648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1334 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 121443648 is about 11020.1473674357. The cubic root of 121443648 is about 495.2125033925.

Adding to 121443648 its reverse (846344121), we get a palindrome (967787769).

The spelling of 121443648 in words is "one hundred twenty-one million, four hundred forty-three thousand, six hundred forty-eight".