200104345421 has 4 divisors (see below), whose sum is σ = 200317904892. Its totient is φ = 199890785952.

The previous prime is 200104345403. The next prime is 200104345439. The reversal of 200104345421 is 124543401002.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (200104345403) and next prime (200104345439).

It can be written as a sum of positive squares in 2 ways, for example, as 32369047396 + 167735298025 = 179914^2 + 409555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200104345421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200106345421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106778330 + ... + 106780203.

It is an arithmetic number, because the mean of its divisors is an integer number (50079476223).

Almost surely, 2^200104345421 is an apocalyptic number.

It is an amenable number.

200104345421 is a deficient number, since it is larger than the sum of its proper divisors (213559471).

200104345421 is an equidigital number, since it uses as much as digits as its factorization.

200104345421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213559470.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 200104345421 its reverse (124543401002), we get a palindrome (324647746423).

The spelling of 200104345421 in words is "two hundred billion, one hundred four million, three hundred forty-five thousand, four hundred twenty-one".