121223012099 has 8 divisors (see below), whose sum is σ = 138595084800. Its totient is φ = 103864564296.

The previous prime is 121223012077. The next prime is 121223012137. The reversal of 121223012099 is 990210322121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121223012099 - 2⁸ = 121223011843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121223012039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3387149 + ... + 3422750.

It is an arithmetic number, because the mean of its divisors is an integer number (17324385600).

Almost surely, 2^121223012099 is an apocalyptic number.

121223012099 is a deficient number, since it is larger than the sum of its proper divisors (17372072701).

121223012099 is an equidigital number, since it uses as much as digits as its factorization.

121223012099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812449.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 121223012099 in words is "one hundred twenty-one billion, two hundred twenty-three million, twelve thousand, ninety-nine".