201221040122103 has 16 divisors (see below), whose sum is σ = 271063501745120. Its totient is φ = 132762998439936.

The previous prime is 201221040122023. The next prime is 201221040122131. The reversal of 201221040122103 is 301221040122102.

It is a happy number.

It is not a de Polignac number, because 201221040122103 - 2¹⁴ = 201221040105719 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 201221040122103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221040122183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24386103 + ... + 31577271.

It is an arithmetic number, because the mean of its divisors is an integer number (16941468859070).

Almost surely, 2^{201221040122103} is an apocalyptic number.

201221040122103 is a deficient number, since it is larger than the sum of its proper divisors (69842461623017).

201221040122103 is an equidigital number, since it uses as much as digits as its factorization.

201221040122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7287426.

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

Adding to 201221040122103 its reverse (301221040122102), we get a palindrome (502442080244205).

Subtracting 201221040122103 from its reverse (301221040122102), we obtain a palindrome (99999999999999).

The spelling of 201221040122103 in words is "two hundred one trillion, two hundred twenty-one billion, forty million, one hundred twenty-two thousand, one hundred three".