121992385350 has 96 divisors (see below), whose sum is σ = 330122620800. Its totient is φ = 29566944000.

The previous prime is 121992385327. The next prime is 121992385379. The reversal of 121992385350 is 53583299121.

It is a self number, because there is not a number n which added to its sum of digits gives 121992385350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12074601 + ... + 12084699.

It is an arithmetic number, because the mean of its divisors is an integer number (3438777300).

Almost surely, 2^121992385350 is an apocalyptic number.

121992385350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121992385350 is an abundant number, since it is smaller than the sum of its proper divisors (208130235450).

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

121992385350 is a wasteful number, since it uses less digits than its factorization.

121992385350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17446 (or 17441 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 121992385350 in words is "one hundred twenty-one billion, nine hundred ninety-two million, three hundred eighty-five thousand, three hundred fifty".