12121102209 has 8 divisors (see below), whose sum is σ = 16598266240. Its totient is φ = 7862336496.

The previous prime is 12121102181. The next prime is 12121102211. The reversal of 12121102209 is 90220112121.

12121102209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12121102209 - 2¹² = 12121098113 is a prime.

It is a super-2 number, since 2×12121102209² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121102229) 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, 54599449 + ... + 54599670.

It is an arithmetic number, because the mean of its divisors is an integer number (2074783280).

Almost surely, 2^12121102209 is an apocalyptic number.

It is an amenable number.

12121102209 is a deficient number, since it is larger than the sum of its proper divisors (4477164031).

12121102209 is a wasteful number, since it uses less digits than its factorization.

12121102209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109199159.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12121102209 in words is "twelve billion, one hundred twenty-one million, one hundred two thousand, two hundred nine".