121868586788 has 12 divisors (see below), whose sum is σ = 229675413660. Its totient is φ = 56247040032.

The previous prime is 121868586737. The next prime is 121868586821. The reversal of 121868586788 is 887685868121.

It can be written as a sum of positive squares in 2 ways, for example, as 14885952064 + 106982634724 = 122008^2 + 327082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171813283 + ... + 1171813386.

It is an arithmetic number, because the mean of its divisors is an integer number (19139617805).

Almost surely, 2^121868586788 is an apocalyptic number.

It is an amenable number.

121868586788 is a deficient number, since it is larger than the sum of its proper divisors (107806826872).

121868586788 is a wasteful number, since it uses less digits than its factorization.

121868586788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343626686 (or 2343626684 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 68.

The spelling of 121868586788 in words is "one hundred twenty-one billion, eight hundred sixty-eight million, five hundred eighty-six thousand, seven hundred eighty-eight".