100200020020109 has 2 divisors, whose sum is σ = 100200020020110. Its totient is φ = 100200020020108.

The previous prime is 100200020020027. The next prime is 100200020020129. The reversal of 100200020020109 is 901020020002001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60833806957609 + 39366213062500 = 7799603^2 + 6274250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100200020020109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100200020020129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50100010010054 + 50100010010055.

It is an arithmetic number, because the mean of its divisors is an integer number (50100010010055).

Almost surely, 2^{100200020020109} is an apocalyptic number.

It is an amenable number.

100200020020109 is a deficient number, since it is larger than the sum of its proper divisors (1).

100200020020109 is an equidigital number, since it uses as much as digits as its factorization.

100200020020109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 100200020020109 in words is "one hundred trillion, two hundred billion, twenty million, twenty thousand, one hundred nine".