200421301244189 has 2 divisors, whose sum is σ = 200421301244190. Its totient is φ = 200421301244188.

The previous prime is 200421301244069. The next prime is 200421301244201. The reversal of 200421301244189 is 981442103124002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199777503627289 + 643797616900 = 14134267^2 + 802370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200421301244189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200421301240189) 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, 100210650622094 + 100210650622095.

It is an arithmetic number, because the mean of its divisors is an integer number (100210650622095).

Almost surely, 2^{200421301244189} is an apocalyptic number.

It is an amenable number.

200421301244189 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421301244189 is an equidigital number, since it uses as much as digits as its factorization.

200421301244189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 200421301244189 in words is "two hundred trillion, four hundred twenty-one billion, three hundred one million, two hundred forty-four thousand, one hundred eighty-nine".