200209121 has 8 divisors (see below), whose sum is σ = 228916800. Its totient is φ = 171528048.

The previous prime is 200209117. The next prime is 200209123. The reversal of 200209121 is 121902002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200209121 - 2² = 200209117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200209121.

It is not an unprimeable number, because it can be changed into a prime (200209123) 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, 13595 + ... + 24191.

It is an arithmetic number, because the mean of its divisors is an integer number (28614600).

Almost surely, 2^200209121 is an apocalyptic number.

It is an amenable number.

200209121 is a deficient number, since it is larger than the sum of its proper divisors (28707679).

200209121 is a wasteful number, since it uses less digits than its factorization.

200209121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13303.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 200209121 is about 14149.5272359185. The cubic root of 200209121 is about 585.0073011483.

The spelling of 200209121 in words is "two hundred million, two hundred nine thousand, one hundred twenty-one".