221201200122103 has 4 divisors (see below), whose sum is σ = 221203826082720. Its totient is φ = 221198574161488.

The previous prime is 221201200122013. The next prime is 221201200122113. The reversal of 221201200122103 is 301221002102122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221201200122103 - 2⁹ = 221201200121591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201200122113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312853950 + ... + 1313022427.

It is an arithmetic number, because the mean of its divisors is an integer number (55300956520680).

Almost surely, 2^{221201200122103} is an apocalyptic number.

221201200122103 is a deficient number, since it is larger than the sum of its proper divisors (2625960617).

221201200122103 is an equidigital number, since it uses as much as digits as its factorization.

221201200122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625960616.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221201200122103 its reverse (301221002102122), we get a palindrome (522422202224225).

The spelling of 221201200122103 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred million, one hundred twenty-two thousand, one hundred three".