20201110001801 has 2 divisors, whose sum is σ = 20201110001802. Its totient is φ = 20201110001800.

The previous prime is 20201110001789. The next prime is 20201110001803. The reversal of 20201110001801 is 10810001110202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20186833336576 + 14276665225 = 4492976^2 + 119485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201110001801 is a prime.

Together with 20201110001803, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20201110001801.

It is not a weakly prime, because it can be changed into another prime (20201110001803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100555000900 + 10100555000901.

It is an arithmetic number, because the mean of its divisors is an integer number (10100555000901).

Almost surely, 2^{20201110001801} is an apocalyptic number.

It is an amenable number.

20201110001801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201110001801 is an equidigital number, since it uses as much as digits as its factorization.

20201110001801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

The spelling of 20201110001801 in words is "twenty trillion, two hundred one billion, one hundred ten million, one thousand, eight hundred one".