121525515300012 has 24 divisors (see below), whose sum is σ = 283598015962800. Its totient is φ = 40503007919616.

The previous prime is 121525515300011. The next prime is 121525515300023. The reversal of 121525515300012 is 210003515525121.

It is not an unprimeable number, because it can be changed into a prime (121525515300011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687055437 + ... + 687232292.

It is an arithmetic number, because the mean of its divisors is an integer number (11816583998450).

Almost surely, 2^{121525515300012} is an apocalyptic number.

121525515300012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121525515300012 is an abundant number, since it is smaller than the sum of its proper divisors (162072500662788).

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

121525515300012 is a wasteful number, since it uses less digits than its factorization.

121525515300012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374295105 (or 1374295103 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 121525515300012 in words is "one hundred twenty-one trillion, five hundred twenty-five billion, five hundred fifteen million, three hundred thousand, twelve".