12106622404109 has 4 divisors (see below), whose sum is σ = 12106632739740. Its totient is φ = 12106612068480.

The previous prime is 12106622404099. The next prime is 12106622404141. The reversal of 12106622404109 is 90140422660121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3831622247209 + 8275000156900 = 1957453^2 + 2876630^2 .

It is a cyclic number.

It is not a de Polignac number, because 12106622404109 - 2³² = 12102327436813 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 (12106622404189) 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, 3147524 + ... + 5841245.

It is an arithmetic number, because the mean of its divisors is an integer number (3026658184935).

Almost surely, 2^{12106622404109} is an apocalyptic number.

It is an amenable number.

12106622404109 is a deficient number, since it is larger than the sum of its proper divisors (10335631).

12106622404109 is an equidigital number, since it uses as much as digits as its factorization.

12106622404109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335630.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 12106622404109 in words is "twelve trillion, one hundred six billion, six hundred twenty-two million, four hundred four thousand, one hundred nine".