200521442321243 has 16 divisors (see below), whose sum is σ = 201415407874560. Its totient is φ = 199629494314656.

The previous prime is 200521442321231. The next prime is 200521442321267. The reversal of 200521442321243 is 342123244125002.

It is a cyclic number.

It is not a de Polignac number, because 200521442321243 - 2⁸ = 200521442320987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200521442921243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1179432080 + ... + 1179602082.

It is an arithmetic number, because the mean of its divisors is an integer number (12588462992160).

Almost surely, 2^{200521442321243} is an apocalyptic number.

200521442321243 is a deficient number, since it is larger than the sum of its proper divisors (893965553317).

200521442321243 is a wasteful number, since it uses less digits than its factorization.

200521442321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175906.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 200521442321243 its reverse (342123244125002), we get a palindrome (542644686446245).

The spelling of 200521442321243 in words is "two hundred trillion, five hundred twenty-one billion, four hundred forty-two million, three hundred twenty-one thousand, two hundred forty-three".