201221200020110 has 64 divisors (see below), whose sum is σ = 371017467836928. Its totient is φ = 78559494000000.

The previous prime is 201221200020017. The next prime is 201221200020143. The reversal of 201221200020110 is 11020002122102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14942945 + ... + 25014675.

It is an arithmetic number, because the mean of its divisors is an integer number (5797147934952).

Almost surely, 2^{201221200020110} is an apocalyptic number.

201221200020110 is a deficient number, since it is larger than the sum of its proper divisors (169796267816818).

201221200020110 is a wasteful number, since it uses less digits than its factorization.

201221200020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072121.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201221200020110 its reverse (11020002122102), we get a palindrome (212241202142212).

The spelling of 201221200020110 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred million, twenty thousand, one hundred ten".