121000559839 has 4 divisors (see below), whose sum is σ = 121011316200. Its totient is φ = 120989803480.

The previous prime is 121000559833. The next prime is 121000559891. The reversal of 121000559839 is 938955000121.

It is a happy number.

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 121000559839 - 2³ = 121000559831 is a prime.

It is a super-2 number, since 2×121000559839² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000559795 and 121000559804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000559831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5361289 + ... + 5383810.

It is an arithmetic number, because the mean of its divisors is an integer number (30252829050).

Almost surely, 2^121000559839 is an apocalyptic number.

121000559839 is a deficient number, since it is larger than the sum of its proper divisors (10756361).

121000559839 is a wasteful number, since it uses less digits than its factorization.

121000559839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10756360.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 121000559839 in words is "one hundred twenty-one billion, five hundred fifty-nine thousand, eight hundred thirty-nine".