121210118016608 has 96 divisors (see below), whose sum is σ = 254343078531360. Its totient is φ = 56751834746880.

The previous prime is 121210118016607. The next prime is 121210118016623. The reversal of 121210118016608 is 806610811012121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210118016607) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5108003 + ... + 16386333.

It is an arithmetic number, because the mean of its divisors is an integer number (2649407068035).

Almost surely, 2^{121210118016608} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121210118016608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127171539265680).

121210118016608 is an abundant number, since it is smaller than the sum of its proper divisors (133132960514752).

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

121210118016608 is a wasteful number, since it uses less digits than its factorization.

121210118016608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11278720 (or 11278712 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 38.

Adding to 121210118016608 its reverse (806610811012121), we get a palindrome (927820929028729).

The spelling of 121210118016608 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eighteen million, sixteen thousand, six hundred eight".