200021441 has 4 divisors (see below), whose sum is σ = 200143812. Its totient is φ = 199899072.

The previous prime is 200021401. The next prime is 200021447. The reversal of 200021441 is 144120002.

200021441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84566416 + 115455025 = 9196^2 + 10745^2 .

It is a cyclic number.

It is not a de Polignac number, because 200021441 - 2⁶ = 200021377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200021447) 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, 58700 + ... + 62013.

It is an arithmetic number, because the mean of its divisors is an integer number (50035953).

Almost surely, 2^200021441 is an apocalyptic number.

It is an amenable number.

200021441 is a deficient number, since it is larger than the sum of its proper divisors (122371).

200021441 is a wasteful number, since it uses less digits than its factorization.

200021441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122370.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 200021441 is about 14142.8936572400. The cubic root of 200021441 is about 584.8244448506.

Adding to 200021441 its reverse (144120002), we get a palindrome (344141443).

It can be divided in two parts, 20002 and 1441, that multiplied together give a palindrome (28822882).

The spelling of 200021441 in words is "two hundred million, twenty-one thousand, four hundred forty-one".