121117515000 has 80 divisors (see below), whose sum is σ = 378371163720. Its totient is φ = 32298000000.

The previous prime is 121117514989. The next prime is 121117515011. The reversal of 121117515000 is 515711121.

It is an interprime number because it is at equal distance from previous prime (121117514989) and next prime (121117515011).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4022251 + ... + 4052250.

Almost surely, 2^121117515000 is an apocalyptic number.

121117515000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121117515000 is an abundant number, since it is smaller than the sum of its proper divisors (257253648720).

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

121117515000 is an equidigital number, since it uses as much as digits as its factorization.

121117515000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8074530 (or 8074511 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 24.

The spelling of 121117515000 in words is "one hundred twenty-one billion, one hundred seventeen million, five hundred fifteen thousand".