200421122441209 has 2 divisors, whose sum is σ = 200421122441210. Its totient is φ = 200421122441208.

The previous prime is 200421122441191. The next prime is 200421122441231. The reversal of 200421122441209 is 902144221124002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193568229894400 + 6852892546809 = 13912880^2 + 2617803^2 .

It is a cyclic number.

It is not a de Polignac number, because 200421122441209 - 2¹³ = 200421122433017 is a prime.

It is a super-2 number, since 2×200421122441209² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200421122441909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100210561220604 + 100210561220605.

It is an arithmetic number, because the mean of its divisors is an integer number (100210561220605).

Almost surely, 2^{200421122441209} is an apocalyptic number.

It is an amenable number.

200421122441209 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421122441209 is an equidigital number, since it uses as much as digits as its factorization.

200421122441209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 200421122441209 in words is "two hundred trillion, four hundred twenty-one billion, one hundred twenty-two million, four hundred forty-one thousand, two hundred nine".