220000212109 has 2 divisors, whose sum is σ = 220000212110. Its totient is φ = 220000212108.

The previous prime is 220000212079. The next prime is 220000212161. The reversal of 220000212109 is 901212000022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135332015625 + 84668196484 = 367875^2 + 290978^2 .

It is a cyclic number.

It is not a de Polignac number, because 220000212109 - 2⁵ = 220000212077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220000212199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000106054 + 110000106055.

It is an arithmetic number, because the mean of its divisors is an integer number (110000106055).

Almost surely, 2^220000212109 is an apocalyptic number.

It is an amenable number.

220000212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

220000212109 is an equidigital number, since it uses as much as digits as its factorization.

220000212109 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 19.

The spelling of 220000212109 in words is "two hundred twenty billion, two hundred twelve thousand, one hundred nine".