200121344 has 88 divisors (see below), whose sum is σ = 433308960. Its totient is φ = 92094464.

The previous prime is 200121329. The next prime is 200121349. The reversal of 200121344 is 443121002.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682862 + ... + 683154.

Almost surely, 2^200121344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200121344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216654480).

200121344 is an abundant number, since it is smaller than the sum of its proper divisors (233187616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200121344 is a wasteful number, since it uses less digits than its factorization.

200121344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 200121344 is about 14146.4251314599. The cubic root of 200121344 is about 584.9217944010.

Adding to 200121344 its reverse (443121002), we get a palindrome (643242346).

The spelling of 200121344 in words is "two hundred million, one hundred twenty-one thousand, three hundred forty-four".