200412212009 has 2 divisors, whose sum is σ = 200412212010. Its totient is φ = 200412212008.

The previous prime is 200412212003. The next prime is 200412212141. The reversal of 200412212009 is 900212214002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199158697984 + 1253514025 = 446272^2 + 35405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200412212009 is a prime.

It is not a weakly prime, because it can be changed into another prime (200412212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100206106004 + 100206106005.

It is an arithmetic number, because the mean of its divisors is an integer number (100206106005).

Almost surely, 2^200412212009 is an apocalyptic number.

It is an amenable number.

200412212009 is a deficient number, since it is larger than the sum of its proper divisors (1).

200412212009 is an equidigital number, since it uses as much as digits as its factorization.

200412212009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 200412212009 in words is "two hundred billion, four hundred twelve million, two hundred twelve thousand, nine".