12122221102109 has 4 divisors (see below), whose sum is σ = 12122233028220. Its totient is φ = 12122209176000.

The previous prime is 12122221102081. The next prime is 12122221102111. The reversal of 12122221102109 is 90120112222121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9584460590884 + 2537760511225 = 3095878^2 + 1593035^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122221102109 - 2⁸ = 12122221101853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122221102139) 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, 4280054 + ... + 6524055.

It is an arithmetic number, because the mean of its divisors is an integer number (3030558257055).

Almost surely, 2^{12122221102109} is an apocalyptic number.

It is an amenable number.

12122221102109 is a deficient number, since it is larger than the sum of its proper divisors (11926111).

12122221102109 is a wasteful number, since it uses less digits than its factorization.

12122221102109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11926110.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 12122221102109 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, one hundred nine".