200421110144249 has 2 divisors, whose sum is σ = 200421110144250. Its totient is φ = 200421110144248.

The previous prime is 200421110144201. The next prime is 200421110144251. The reversal of 200421110144249 is 942441011124002.

200421110144249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166063634818624 + 34357475325625 = 12886568^2 + 5861525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200421110144249 is a prime.

Together with 200421110144251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200421110134249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100210555072124 + 100210555072125.

It is an arithmetic number, because the mean of its divisors is an integer number (100210555072125).

Almost surely, 2^{200421110144249} is an apocalyptic number.

It is an amenable number.

200421110144249 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421110144249 is an equidigital number, since it uses as much as digits as its factorization.

200421110144249 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 35.

The spelling of 200421110144249 in words is "two hundred trillion, four hundred twenty-one billion, one hundred ten million, one hundred forty-four thousand, two hundred forty-nine".