121751600346 has 24 divisors (see below), whose sum is σ = 264978080640. Its totient is φ = 40401875016.

The previous prime is 121751600323. The next prime is 121751600417. The reversal of 121751600346 is 643006157121.

121751600346 is a `hidden beast` number, since 1 + 2 + 1 + 7 + 5 + 1 + 600 + 3 + 46 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121751600346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15161856 + ... + 15169883.

It is an arithmetic number, because the mean of its divisors is an integer number (11040753360).

Almost surely, 2^121751600346 is an apocalyptic number.

121751600346 is an abundant number, since it is smaller than the sum of its proper divisors (143226480294).

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

121751600346 is a wasteful number, since it uses less digits than its factorization.

121751600346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30331970 (or 30331967 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 121751600346 its reverse (643006157121), we get a palindrome (764757757467).

The spelling of 121751600346 in words is "one hundred twenty-one billion, seven hundred fifty-one million, six hundred thousand, three hundred forty-six".