121121110216 has 32 divisors (see below), whose sum is σ = 230139624960. Its totient is φ = 59755352832.

The previous prime is 121121110211. The next prime is 121121110219. The reversal of 121121110216 is 612011121121.

121121110216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121121110193 and 121121110202.

It is not an unprimeable number, because it can be changed into a prime (121121110211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98820 + ... + 502003.

It is an arithmetic number, because the mean of its divisors is an integer number (7191863280).

Almost surely, 2^121121110216 is an apocalyptic number.

It is an amenable number.

121121110216 is a deficient number, since it is larger than the sum of its proper divisors (109018514744).

121121110216 is a wasteful number, since it uses less digits than its factorization.

121121110216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601165 (or 601161 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 121121110216 its reverse (612011121121), we get a palindrome (733132231337).

The spelling of 121121110216 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred sixteen".