121210118016609 has 24 divisors (see below), whose sum is σ = 171149287563072. Its totient is φ = 76292482920480.

The previous prime is 121210118016607. The next prime is 121210118016623. The reversal of 121210118016609 is 906610811012121.

121210118016609 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 121210118016609 - 2¹ = 121210118016607 is a prime.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190673637 + ... + 191308274.

It is an arithmetic number, because the mean of its divisors is an integer number (7131220315128).

Almost surely, 2^{121210118016609} is an apocalyptic number.

121210118016609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

121210118016609 is a deficient number, since it is larger than the sum of its proper divisors (49939169546463).

121210118016609 is a wasteful number, since it uses less digits than its factorization.

121210118016609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381982245 (or 381982226 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 39.

The spelling of 121210118016609 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eighteen million, sixteen thousand, six hundred nine".