2120202202109 has 2 divisors, whose sum is σ = 2120202202110. Its totient is φ = 2120202202108.

The previous prime is 2120202202067. The next prime is 2120202202187. The reversal of 2120202202109 is 9012022020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1411633886884 + 708568315225 = 1188122^2 + 841765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120202202109 - 2¹² = 2120202198013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120202202009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060101101054 + 1060101101055.

It is an arithmetic number, because the mean of its divisors is an integer number (1060101101055).

Almost surely, 2^{2120202202109} is an apocalyptic number.

It is an amenable number.

2120202202109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120202202109 is an equidigital number, since it uses as much as digits as its factorization.

2120202202109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 2120202202109 in words is "two trillion, one hundred twenty billion, two hundred two million, two hundred two thousand, one hundred nine".