210002120202109 has 2 divisors, whose sum is σ = 210002120202110. Its totient is φ = 210002120202108.

The previous prime is 210002120202067. The next prime is 210002120202143. The reversal of 210002120202109 is 901202021200012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207020385569209 + 2981734632900 = 14388203^2 + 1726770^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002120202109 - 2⁷ = 210002120201981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210002120202109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210002120202179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105001060101054 + 105001060101055.

It is an arithmetic number, because the mean of its divisors is an integer number (105001060101055).

Almost surely, 2^{210002120202109} is an apocalyptic number.

It is an amenable number.

210002120202109 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002120202109 is an equidigital number, since it uses as much as digits as its factorization.

210002120202109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 210002120202109 in words is "two hundred ten trillion, two billion, one hundred twenty million, two hundred two thousand, one hundred nine".