200121220120210 has 16 divisors (see below), whose sum is σ = 367882413158016. Its totient is φ = 78345328727728.

The previous prime is 200121220120193. The next prime is 200121220120259. The reversal of 200121220120210 is 12021022121002.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212894914552 + ... + 212894915491.

It is an arithmetic number, because the mean of its divisors is an integer number (22992650822376).

Almost surely, 2^{200121220120210} is an apocalyptic number.

200121220120210 is a deficient number, since it is larger than the sum of its proper divisors (167761193037806).

200121220120210 is a wasteful number, since it uses less digits than its factorization.

200121220120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425789830097.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200121220120210 its reverse (12021022121002), we get a palindrome (212142242241212).

The spelling of 200121220120210 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, two hundred ten".