121803153560 has 32 divisors (see below), whose sum is σ = 298971378000. Its totient is φ = 44292055680.

The previous prime is 121803153553. The next prime is 121803153587. The reversal of 121803153560 is 65351308121.

121803153560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121803153560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138412235 + ... + 138413114.

Almost surely, 2^121803153560 is an apocalyptic number.

121803153560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121803153560 is an abundant number, since it is smaller than the sum of its proper divisors (177168224440).

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

121803153560 is a wasteful number, since it uses less digits than its factorization.

121803153560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276825371 (or 276825367 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 121803153560 in words is "one hundred twenty-one billion, eight hundred three million, one hundred fifty-three thousand, five hundred sixty".