201221101101203 has 16 divisors (see below), whose sum is σ = 203524205026176. Its totient is φ = 198925950061440.

The previous prime is 201221101101179. The next prime is 201221101101217. The reversal of 201221101101203 is 302101101122102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201221101101203 - 2¹⁰ = 201221101100179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221101101233) 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 15 ways as a sum of consecutive naturals, for example, 336082475 + ... + 336680667.

It is an arithmetic number, because the mean of its divisors is an integer number (12720262814136).

Almost surely, 2^{201221101101203} is an apocalyptic number.

201221101101203 is a deficient number, since it is larger than the sum of its proper divisors (2303103924973).

201221101101203 is a wasteful number, since it uses less digits than its factorization.

201221101101203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604834.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 201221101101203 its reverse (302101101122102), we get a palindrome (503322202223305).

The spelling of 201221101101203 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred one million, one hundred one thousand, two hundred three".