121338708912 has 100 divisors (see below), whose sum is σ = 352440269016. Its totient is φ = 40302178560.

The previous prime is 121338708871. The next prime is 121338708913. The reversal of 121338708912 is 219807833121.

It is not an unprimeable number, because it can be changed into a prime (121338708913) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 197583 + ... + 530769.

Almost surely, 2^121338708912 is an apocalyptic number.

121338708912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121338708912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176220134508).

121338708912 is an abundant number, since it is smaller than the sum of its proper divisors (231101560104).

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

121338708912 is a wasteful number, since it uses less digits than its factorization.

121338708912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333488 (or 333473 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 121338708912 in words is "one hundred twenty-one billion, three hundred thirty-eight million, seven hundred eight thousand, nine hundred twelve".