1020109208201 has 2 divisors, whose sum is σ = 1020109208202. Its totient is φ = 1020109208200.

The previous prime is 1020109208191. The next prime is 1020109208231. The reversal of 1020109208201 is 1028029010201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774970344976 + 245138863225 = 880324^2 + 495115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020109208201 - 2¹⁴ = 1020109191817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1020109208231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510054604100 + 510054604101.

It is an arithmetic number, because the mean of its divisors is an integer number (510054604101).

Almost surely, 2^{1020109208201} is an apocalyptic number.

It is an amenable number.

1020109208201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020109208201 is an equidigital number, since it uses as much as digits as its factorization.

1020109208201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 1020109208201 in words is "one trillion, twenty billion, one hundred nine million, two hundred eight thousand, two hundred one".