121336784959 has 8 divisors (see below), whose sum is σ = 131058134480. Its totient is φ = 111670828416.

The previous prime is 121336784893. The next prime is 121336784977. The reversal of 121336784959 is 959487633121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121336784959 - 2¹⁹ = 121336260671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121336784999) 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 7 ways as a sum of consecutive naturals, for example, 13843689 + ... + 13852450.

It is an arithmetic number, because the mean of its divisors is an integer number (16382266810).

Almost surely, 2^121336784959 is an apocalyptic number.

121336784959 is a deficient number, since it is larger than the sum of its proper divisors (9721349521).

121336784959 is a wasteful number, since it uses less digits than its factorization.

121336784959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27696489.

The product of its digits is 9797760, while the sum is 58.

The spelling of 121336784959 in words is "one hundred twenty-one billion, three hundred thirty-six million, seven hundred eighty-four thousand, nine hundred fifty-nine".