1000202209 has 2 divisors, whose sum is σ = 1000202210. Its totient is φ = 1000202208.

The previous prime is 1000202153. The next prime is 1000202221. The reversal of 1000202209 is 9022020001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691427025 + 308775184 = 26295^2 + 17572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000202209 - 2¹³ = 1000194017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000202192 and 1000202201.

It is not a weakly prime, because it can be changed into another prime (1000202239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500101104 + 500101105.

It is an arithmetic number, because the mean of its divisors is an integer number (500101105).

Almost surely, 2^1000202209 is an apocalyptic number.

It is an amenable number.

1000202209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000202209 is an equidigital number, since it uses as much as digits as its factorization.

1000202209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1000202209 is about 31625.9736450911. The cubic root of 1000202209 is about 1000.0673984573.

The spelling of 1000202209 in words is "one billion, two hundred two thousand, two hundred nine".