121606521325512 has 16 divisors (see below), whose sum is σ = 304016303313840. Its totient is φ = 40535507108496.

The previous prime is 121606521325427. The next prime is 121606521325529. The reversal of 121606521325512 is 215523125606121.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 2533469194258 + ... + 2533469194305.

It is an arithmetic number, because the mean of its divisors is an integer number (19001018957115).

Almost surely, 2^{121606521325512} is an apocalyptic number.

121606521325512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121606521325512 is an abundant number, since it is smaller than the sum of its proper divisors (182409781988328).

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

121606521325512 is a wasteful number, since it uses less digits than its factorization.

121606521325512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066938388572 (or 5066938388568 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 121606521325512 in words is "one hundred twenty-one trillion, six hundred six billion, five hundred twenty-one million, three hundred twenty-five thousand, five hundred twelve".