2120302109 has 2 divisors, whose sum is σ = 2120302110. Its totient is φ = 2120302108.

The previous prime is 2120302099. The next prime is 2120302139. The reversal of 2120302109 is 9012030212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1836379609 + 283922500 = 42853^2 + 16850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120302109 - 2²⁰ = 2119253533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120302139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060151054 + 1060151055.

It is an arithmetic number, because the mean of its divisors is an integer number (1060151055).

Almost surely, 2^2120302109 is an apocalyptic number.

It is an amenable number.

2120302109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120302109 is an equidigital number, since it uses as much as digits as its factorization.

2120302109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2120302109 is about 46046.7383101127. The cubic root of 2120302109 is about 1284.6926766357.

The spelling of 2120302109 in words is "two billion, one hundred twenty million, three hundred two thousand, one hundred nine".