200121320 has 32 divisors (see below), whose sum is σ = 514598400. Its totient is φ = 68612928.

The previous prime is 200121247. The next prime is 200121329. The reversal of 200121320 is 23121002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (200121329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357080 + ... + 357639.

It is an arithmetic number, because the mean of its divisors is an integer number (16081200).

Almost surely, 2^200121320 is an apocalyptic number.

200121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121320 is an abundant number, since it is smaller than the sum of its proper divisors (314477080).

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

200121320 is a wasteful number, since it uses less digits than its factorization.

200121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714737 (or 714733 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 200121320 is about 14146.4242831890. The cubic root of 200121320 is about 584.9217710184.

Adding to 200121320 its reverse (23121002), we get a palindrome (223242322).

The spelling of 200121320 in words is "two hundred million, one hundred twenty-one thousand, three hundred twenty".