201200220009 has 12 divisors (see below), whose sum is σ = 300644007300. Its totient is φ = 129508187424.

The previous prime is 201200219993. The next prime is 201200220041. The reversal of 201200220009 is 900022002102.

It can be written as a sum of positive squares in 2 ways, for example, as 51254696025 + 149945523984 = 226395^2 + 387228^2 .

It is not a de Polignac number, because 201200220009 - 2⁴ = 201200219993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201200219973 and 201200220000.

It is not an unprimeable number, because it can be changed into a prime (201200220209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385440774 + ... + 385441295.

It is an arithmetic number, because the mean of its divisors is an integer number (25053667275).

Almost surely, 2^201200220009 is an apocalyptic number.

201200220009 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

201200220009 is a deficient number, since it is larger than the sum of its proper divisors (99443787291).

201200220009 is a wasteful number, since it uses less digits than its factorization.

201200220009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770882104 (or 770882101 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The spelling of 201200220009 in words is "two hundred one billion, two hundred million, two hundred twenty thousand, nine".