121521483616 has 48 divisors (see below), whose sum is σ = 258223140000. Its totient is φ = 55961837568.

The previous prime is 121521483557. The next prime is 121521483619. The reversal of 121521483616 is 616384125121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121521483619) 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, 138516 + ... + 512083.

It is an arithmetic number, because the mean of its divisors is an integer number (5379648750).

Almost surely, 2^121521483616 is an apocalyptic number.

121521483616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121521483616 is an abundant number, since it is smaller than the sum of its proper divisors (136701656384).

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

121521483616 is a wasteful number, since it uses less digits than its factorization.

121521483616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651071 (or 651063 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The spelling of 121521483616 in words is "one hundred twenty-one billion, five hundred twenty-one million, four hundred eighty-three thousand, six hundred sixteen".