201221220221103 has 32 divisors (see below), whose sum is σ = 269861561024512. Its totient is φ = 133366604716800.

The previous prime is 201221220221083. The next prime is 201221220221123. The reversal of 201221220221103 is 301122022122102.

201221220221103 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201221220221083) and next prime (201221220221123).

It is not a de Polignac number, because 201221220221103 - 2⁵ = 201221220221071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201221220221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221220221123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1568166318 + ... + 1568294628.

It is an arithmetic number, because the mean of its divisors is an integer number (8433173782016).

Almost surely, 2^{201221220221103} is an apocalyptic number.

201221220221103 is a deficient number, since it is larger than the sum of its proper divisors (68640340803409).

201221220221103 is a wasteful number, since it uses less digits than its factorization.

201221220221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133015.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 201221220221103 its reverse (301122022122102), we get a palindrome (502343242343205).

The spelling of 201221220221103 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred three".