12122102012209 has 4 divisors (see below), whose sum is σ = 13853830871104. Its totient is φ = 10390373153316.

The previous prime is 12122102012191. The next prime is 12122102012231. The reversal of 12122102012209 is 90221020122121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12122102012209 - 2⁷ = 12122102012081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122102012239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865864429437 + ... + 865864429450.

It is an arithmetic number, because the mean of its divisors is an integer number (3463457717776).

Almost surely, 2^{12122102012209} is an apocalyptic number.

It is an amenable number.

12122102012209 is a deficient number, since it is larger than the sum of its proper divisors (1731728858895).

12122102012209 is an equidigital number, since it uses as much as digits as its factorization.

12122102012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731728858894.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 12122102012209 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, twelve thousand, two hundred nine".