201022112209 has 4 divisors (see below), whose sum is σ = 201095240500. Its totient is φ = 200948983920.

The previous prime is 201022112201. The next prime is 201022112219. The reversal of 201022112209 is 902211220102.

201022112209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109757702209 + 91264410000 = 331297^2 + 302100^2 .

It is a cyclic number.

It is not a de Polignac number, because 201022112209 - 2³ = 201022112201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201022112209.

It is not an unprimeable number, because it can be changed into a prime (201022112201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36560022 + ... + 36565519.

It is an arithmetic number, because the mean of its divisors is an integer number (50273810125).

Almost surely, 2^201022112209 is an apocalyptic number.

It is an amenable number.

201022112209 is a deficient number, since it is larger than the sum of its proper divisors (73128291).

201022112209 is an equidigital number, since it uses as much as digits as its factorization.

201022112209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73128290.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 201022112209 in words is "two hundred one billion, twenty-two million, one hundred twelve thousand, two hundred nine".