121443443 has 4 divisors (see below), whose sum is σ = 132483768. Its totient is φ = 110403120.

The previous prime is 121443433. The next prime is 121443451. The reversal of 121443443 is 344344121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121443443 - 2¹⁸ = 121181299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121443433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5520146 + ... + 5520167.

It is an arithmetic number, because the mean of its divisors is an integer number (33120942).

Almost surely, 2^121443443 is an apocalyptic number.

121443443 is a deficient number, since it is larger than the sum of its proper divisors (11040325).

121443443 is a wasteful number, since it uses less digits than its factorization.

121443443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11040324.

The product of its digits is 4608, while the sum is 26.

The square root of 121443443 is about 11020.1380662857. The cubic root of 121443443 is about 495.2122247485.

Adding to 121443443 its reverse (344344121), we get a palindrome (465787564).

The spelling of 121443443 in words is "one hundred twenty-one million, four hundred forty-three thousand, four hundred forty-three".