121752105530 has 16 divisors (see below), whose sum is σ = 239076861984. Its totient is φ = 44273492880.

The previous prime is 121752105521. The next prime is 121752105661. The reversal of 121752105530 is 35501257121.

121752105530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 553418552 + ... + 553418771.

It is an arithmetic number, because the mean of its divisors is an integer number (14942303874).

Almost surely, 2^121752105530 is an apocalyptic number.

121752105530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121752105530 is a deficient number, since it is larger than the sum of its proper divisors (117324756454).

121752105530 is a wasteful number, since it uses less digits than its factorization.

121752105530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106837341.

The product of its (nonzero) digits is 10500, while the sum is 32.

The spelling of 121752105530 in words is "one hundred twenty-one billion, seven hundred fifty-two million, one hundred five thousand, five hundred thirty".