121317965616000 has 128 divisors (see below), whose sum is σ = 402169056176160. Its totient is φ = 32351457484800.

The previous prime is 121317965615993. The next prime is 121317965616059. The reversal of 121317965616000 is 616569713121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1263680809 + ... + 1263776808.

Almost surely, 2^{121317965616000} is an apocalyptic number.

121317965616000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121317965616000 is an abundant number, since it is smaller than the sum of its proper divisors (280851090560160).

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

121317965616000 is an equidigital number, since it uses as much as digits as its factorization.

121317965616000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527457649 (or 2527457627 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 121317965616000 in words is "one hundred twenty-one trillion, three hundred seventeen billion, nine hundred sixty-five million, six hundred sixteen thousand".