201122220709 has 2 divisors, whose sum is σ = 201122220710. Its totient is φ = 201122220708.

The previous prime is 201122220683. The next prime is 201122220713. The reversal of 201122220709 is 907022221102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201020412609 + 101808100 = 448353^2 + 10090^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122220709 - 2⁷ = 201122220581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201122220749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561110354 + 100561110355.

It is an arithmetic number, because the mean of its divisors is an integer number (100561110355).

Almost surely, 2^201122220709 is an apocalyptic number.

It is an amenable number.

201122220709 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122220709 is an equidigital number, since it uses as much as digits as its factorization.

201122220709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 201122220709 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, seven hundred nine".