121751556332 has 12 divisors (see below), whose sum is σ = 243503112720. Its totient is φ = 52179238416.

The previous prime is 121751556319. The next prime is 121751556361. The reversal of 121751556332 is 233655157121.

121751556332 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 121751556332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174134907 + ... + 2174134962.

It is an arithmetic number, because the mean of its divisors is an integer number (20291926060).

Almost surely, 2^121751556332 is an apocalyptic number.

It is an amenable number.

121751556332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121751556332 is a wasteful number, since it uses less digits than its factorization.

121751556332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348269880 (or 4348269878 counting only the distinct ones).

The product of its digits is 189000, while the sum is 41.

The spelling of 121751556332 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred fifty-six thousand, three hundred thirty-two".