121350050550 has 36 divisors (see below), whose sum is σ = 326027137020. Its totient is φ = 32360013360.

The previous prime is 121350050509. The next prime is 121350050561. The reversal of 121350050550 is 55050053121.

121350050550 is a `hidden beast` number, since 1 + 2 + 13 + 50 + 0 + 50 + 550 = 666.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 134832940 + ... + 134833839.

Almost surely, 2^121350050550 is an apocalyptic number.

121350050550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121350050550 is an abundant number, since it is smaller than the sum of its proper divisors (204677086470).

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

121350050550 is a wasteful number, since it uses less digits than its factorization.

121350050550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269666797 (or 269666789 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 121350050550 in words is "one hundred twenty-one billion, three hundred fifty million, fifty thousand, five hundred fifty".