12021112209 has 8 divisors (see below), whose sum is σ = 16086014080. Its totient is φ = 7985142576.

The previous prime is 12021112177. The next prime is 12021112231. The reversal of 12021112209 is 90221112021.

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

It is not a de Polignac number, because 12021112209 - 2⁵ = 12021112177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12021112009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7232089 + ... + 7233750.

It is an arithmetic number, because the mean of its divisors is an integer number (2010751760).

Almost surely, 2^12021112209 is an apocalyptic number.

It is an amenable number.

12021112209 is a deficient number, since it is larger than the sum of its proper divisors (4064901871).

12021112209 is a wasteful number, since it uses less digits than its factorization.

12021112209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14466119.

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

The spelling of 12021112209 in words is "twelve billion, twenty-one million, one hundred twelve thousand, two hundred nine".