200121220020010 has 16 divisors (see below), whose sum is σ = 360390797030016. Its totient is φ = 80010132231568.

The previous prime is 200121220019989. The next prime is 200121220020011. The reversal of 200121220020010 is 10020022121002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (200121220020011) by changing a digit.

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, 4794450142 + ... + 4794491881.

It is an arithmetic number, because the mean of its divisors is an integer number (22524424814376).

Almost surely, 2^{200121220020010} is an apocalyptic number.

200121220020010 is a deficient number, since it is larger than the sum of its proper divisors (160269577010006).

200121220020010 is a wasteful number, since it uses less digits than its factorization.

200121220020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9588944117.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200121220020010 its reverse (10020022121002), we get a palindrome (210141242141012).

The spelling of 200121220020010 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, twenty thousand, ten".