121338943 has 16 divisors (see below), whose sum is σ = 136598400. Its totient is φ = 106840800.

The previous prime is 121338937. The next prime is 121338953. The reversal of 121338943 is 349833121.

It is not a de Polignac number, because 121338943 - 2¹⁷ = 121207871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121338899 and 121338908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121338953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43608 + ... + 46306.

It is an arithmetic number, because the mean of its divisors is an integer number (8537400).

Almost surely, 2^121338943 is an apocalyptic number.

121338943 is a deficient number, since it is larger than the sum of its proper divisors (15259457).

121338943 is a wasteful number, since it uses less digits than its factorization.

121338943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838.

The product of its digits is 15552, while the sum is 34.

The square root of 121338943 is about 11015.3957259828. The cubic root of 121338943 is about 495.0701434456.

The spelling of 121338943 in words is "one hundred twenty-one million, three hundred thirty-eight thousand, nine hundred forty-three".