121565061116 has 48 divisors (see below), whose sum is σ = 226284547104. Its totient is φ = 56945688576.

The previous prime is 121565061043. The next prime is 121565061187. The reversal of 121565061116 is 611160565121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14275676 + ... + 14284188.

It is an arithmetic number, because the mean of its divisors is an integer number (4714261398).

Almost surely, 2^121565061116 is an apocalyptic number.

It is an amenable number.

121565061116 is a deficient number, since it is larger than the sum of its proper divisors (104719485988).

121565061116 is a wasteful number, since it uses less digits than its factorization.

121565061116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9470 (or 9468 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 121565061116 in words is "one hundred twenty-one billion, five hundred sixty-five million, sixty-one thousand, one hundred sixteen".