121330143 has 48 divisors (see below), whose sum is σ = 208790400. Its totient is φ = 69634080.

The previous prime is 121330123. The next prime is 121330151. The reversal of 121330143 is 341033121.

It is not a de Polignac number, because 121330143 - 2¹³ = 121321951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121330103) 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 47 ways as a sum of consecutive naturals, for example, 49593 + ... + 51981.

It is an arithmetic number, because the mean of its divisors is an integer number (4349800).

Almost surely, 2^121330143 is an apocalyptic number.

121330143 is a deficient number, since it is larger than the sum of its proper divisors (87460257).

121330143 is a wasteful number, since it uses less digits than its factorization.

121330143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 121330143 is about 11014.9962778024. The cubic root of 121330143 is about 495.0581749809.

Adding to 121330143 its reverse (341033121), we get a palindrome (462363264).

The spelling of 121330143 in words is "one hundred twenty-one million, three hundred thirty thousand, one hundred forty-three".