121517150000 has 60 divisors (see below), whose sum is σ = 294280633584. Its totient is φ = 48606840000.

The previous prime is 121517149967. The next prime is 121517150003. The reversal of 121517150000 is 51715121.

It is not an unprimeable number, because it can be changed into a prime (121517150003) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1165172 + ... + 1265171.

Almost surely, 2^121517150000 is an apocalyptic number.

121517150000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121517150000 is an abundant number, since it is smaller than the sum of its proper divisors (172763483584).

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

121517150000 is an frugal number, since it uses more digits than its factorization.

121517150000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430376 (or 2430350 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 23.

Adding to 121517150000 its reverse (51715121), we get a palindrome (121568865121).

The spelling of 121517150000 in words is "one hundred twenty-one billion, five hundred seventeen million, one hundred fifty thousand".