201022220209 has 2 divisors, whose sum is σ = 201022220210. Its totient is φ = 201022220208.

The previous prime is 201022220099. The next prime is 201022220251. The reversal of 201022220209 is 902022220102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188633862400 + 12388357809 = 434320^2 + 111303^2 .

It is a cyclic number.

It is not a de Polignac number, because 201022220209 - 2³⁵ = 166662481841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201022220209.

It is not a weakly prime, because it can be changed into another prime (201022224209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100511110104 + 100511110105.

It is an arithmetic number, because the mean of its divisors is an integer number (100511110105).

Almost surely, 2^201022220209 is an apocalyptic number.

It is an amenable number.

201022220209 is a deficient number, since it is larger than the sum of its proper divisors (1).

201022220209 is an equidigital number, since it uses as much as digits as its factorization.

201022220209 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 22.

The spelling of 201022220209 in words is "two hundred one billion, twenty-two million, two hundred twenty thousand, two hundred nine".