200121343 has 4 divisors (see below), whose sum is σ = 200166208. Its totient is φ = 200076480.

The previous prime is 200121329. The next prime is 200121349. The reversal of 200121343 is 343121002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121343 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 (200121349) 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, 14898 + ... + 24943.

It is an arithmetic number, because the mean of its divisors is an integer number (50041552).

Almost surely, 2^200121343 is an apocalyptic number.

200121343 is a deficient number, since it is larger than the sum of its proper divisors (44865).

200121343 is an equidigital number, since it uses as much as digits as its factorization.

200121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44864.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 200121343 is about 14146.4250961153. The cubic root of 200121343 is about 584.9217934268.

Adding to 200121343 its reverse (343121002), we get a palindrome (543242345).

The spelling of 200121343 in words is "two hundred million, one hundred twenty-one thousand, three hundred forty-three".