200121222 has 16 divisors (see below), whose sum is σ = 457420032. Its totient is φ = 57177480.

The previous prime is 200121221. The next prime is 200121227. The reversal of 200121222 is 222121002.

It is a junction number, because it is equal to n+sod(n) for n = 200121198 and 200121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382354 + ... + 2382437.

It is an arithmetic number, because the mean of its divisors is an integer number (28588752).

Almost surely, 2^200121222 is an apocalyptic number.

200121222 is an abundant number, since it is smaller than the sum of its proper divisors (257298810).

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

200121222 is a wasteful number, since it uses less digits than its factorization.

200121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764803.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 200121222 is about 14146.4208194158. The cubic root of 200121222 is about 584.9216755390.

Adding to 200121222 its reverse (222121002), we get a palindrome (422242224).

The spelling of 200121222 in words is "two hundred million, one hundred twenty-one thousand, two hundred twenty-two".