200121360643 has 2 divisors, whose sum is σ = 200121360644. Its totient is φ = 200121360642.

The previous prime is 200121360601. The next prime is 200121360757. The reversal of 200121360643 is 346063121002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121360643 is a prime.

It is a super-3 number, since 3×200121360643³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (200121360143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060680321 + 100060680322.

It is an arithmetic number, because the mean of its divisors is an integer number (100060680322).

Almost surely, 2^200121360643 is an apocalyptic number.

200121360643 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121360643 is an equidigital number, since it uses as much as digits as its factorization.

200121360643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 200121360643 its reverse (346063121002), we get a palindrome (546184481645).

The spelling of 200121360643 in words is "two hundred billion, one hundred twenty-one million, three hundred sixty thousand, six hundred forty-three".