121813982000 has 40 divisors (see below), whose sum is σ = 294546213312. Its totient is φ = 48725592000.

The previous prime is 121813981921. The next prime is 121813982011. The reversal of 121813982000 is 289318121.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30451496 + ... + 30455495.

Almost surely, 2^121813982000 is an apocalyptic number.

121813982000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121813982000 is an abundant number, since it is smaller than the sum of its proper divisors (172732231312).

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

121813982000 is an equidigital number, since it uses as much as digits as its factorization.

121813982000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60907014 (or 60906998 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 121813982000 in words is "one hundred twenty-one billion, eight hundred thirteen million, nine hundred eighty-two thousand".