202001222009 has 2 divisors, whose sum is σ = 202001222010. Its totient is φ = 202001222008.

The previous prime is 202001221979. The next prime is 202001222041. The reversal of 202001222009 is 900222100202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201396307984 + 604914025 = 448772^2 + 24595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202001222009 is a prime.

It is not a weakly prime, because it can be changed into another prime (202001222809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000611004 + 101000611005.

It is an arithmetic number, because the mean of its divisors is an integer number (101000611005).

Almost surely, 2^202001222009 is an apocalyptic number.

It is an amenable number.

202001222009 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001222009 is an equidigital number, since it uses as much as digits as its factorization.

202001222009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 202001222009 in words is "two hundred two billion, one million, two hundred twenty-two thousand, nine".