121336784958 has 16 divisors (see below), whose sum is σ = 242677005696. Its totient is φ = 40445022360.

The previous prime is 121336784893. The next prime is 121336784977. The reversal of 121336784958 is 859487633121.

It is a junction number, because it is equal to n+sod(n) for n = 121336784898 and 121336784907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680335 + ... + 839957.

It is an arithmetic number, because the mean of its divisors is an integer number (15167312856).

Almost surely, 2^121336784958 is an apocalyptic number.

121336784958 is an abundant number, since it is smaller than the sum of its proper divisors (121340220738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121336784958 is a wasteful number, since it uses less digits than its factorization.

121336784958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286319.

The product of its digits is 8709120, while the sum is 57.

The spelling of 121336784958 in words is "one hundred twenty-one billion, three hundred thirty-six million, seven hundred eighty-four thousand, nine hundred fifty-eight".