20122210109 has 2 divisors, whose sum is σ = 20122210110. Its totient is φ = 20122210108.

The previous prime is 20122210099. The next prime is 20122210183. The reversal of 20122210109 is 90101222102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18086215225 + 2035994884 = 134485^2 + 45122^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122210109 - 2⁸ = 20122209853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122213109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061105054 + 10061105055.

It is an arithmetic number, because the mean of its divisors is an integer number (10061105055).

Almost surely, 2^20122210109 is an apocalyptic number.

It is an amenable number.

20122210109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122210109 is an equidigital number, since it uses as much as digits as its factorization.

20122210109 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 20.

The spelling of 20122210109 in words is "twenty billion, one hundred twenty-two million, two hundred ten thousand, one hundred nine".