201020100111289 has 2 divisors, whose sum is σ = 201020100111290. Its totient is φ = 201020100111288.

The previous prime is 201020100111169. The next prime is 201020100111317. The reversal of 201020100111289 is 982111001020102.

It is an a-pointer prime, because the next prime (201020100111317) can be obtained adding 201020100111289 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168348678755625 + 32671421355664 = 12974925^2 + 5715892^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020100111289 - 2⁴⁵ = 165835728022457 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020100411289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510050055644 + 100510050055645.

It is an arithmetic number, because the mean of its divisors is an integer number (100510050055645).

Almost surely, 2^{201020100111289} is an apocalyptic number.

It is an amenable number.

201020100111289 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020100111289 is an equidigital number, since it uses as much as digits as its factorization.

201020100111289 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 28.

The spelling of 201020100111289 in words is "two hundred one trillion, twenty billion, one hundred million, one hundred eleven thousand, two hundred eighty-nine".