121755415350 has 24 divisors (see below), whose sum is σ = 301953430440. Its totient is φ = 32468110720.

The previous prime is 121755415319. The next prime is 121755415351. The reversal of 121755415350 is 53514557121.

It is a junction number, because it is equal to n+sod(n) for n = 121755415299 and 121755415308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121755415351) 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 11 ways as a sum of consecutive naturals, for example, 405851235 + ... + 405851534.

It is an arithmetic number, because the mean of its divisors is an integer number (12581392935).

Almost surely, 2^121755415350 is an apocalyptic number.

121755415350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121755415350 is an abundant number, since it is smaller than the sum of its proper divisors (180198015090).

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

121755415350 is a wasteful number, since it uses less digits than its factorization.

121755415350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811702784 (or 811702779 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 121755415350 in words is "one hundred twenty-one billion, seven hundred fifty-five million, four hundred fifteen thousand, three hundred fifty".