20112220110109 has 2 divisors, whose sum is σ = 20112220110110. Its totient is φ = 20112220110108.

The previous prime is 20112220110067. The next prime is 20112220110121. The reversal of 20112220110109 is 90101102221102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19932340639225 + 179879470884 = 4464565^2 + 424122^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112220110109 - 2¹⁷ = 20112219979037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112220110109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112220110209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056110055054 + 10056110055055.

It is an arithmetic number, because the mean of its divisors is an integer number (10056110055055).

Almost surely, 2^{20112220110109} is an apocalyptic number.

It is an amenable number.

20112220110109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112220110109 is an equidigital number, since it uses as much as digits as its factorization.

20112220110109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 20112220110109 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, one hundred ten thousand, one hundred nine".