121193939120 has 20 divisors (see below), whose sum is σ = 281775908640. Its totient is φ = 48477575616.

The previous prime is 121193939101. The next prime is 121193939149. The reversal of 121193939120 is 21939391121.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 757462040 + ... + 757462199.

It is an arithmetic number, because the mean of its divisors is an integer number (14088795432).

Almost surely, 2^121193939120 is an apocalyptic number.

121193939120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121193939120 is an abundant number, since it is smaller than the sum of its proper divisors (160581969520).

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

121193939120 is a wasteful number, since it uses less digits than its factorization.

121193939120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514924252 (or 1514924246 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 121193939120 in words is "one hundred twenty-one billion, one hundred ninety-three million, nine hundred thirty-nine thousand, one hundred twenty".