221201220103 has 16 divisors (see below), whose sum is σ = 230610441600. Its totient is φ = 212020822944.

The previous prime is 221201220047. The next prime is 221201220113. The reversal of 221201220103 is 301022102122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221201220103 - 2¹³ = 221201211911 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 (221201220113) 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, 323800 + ... + 739762.

It is an arithmetic number, because the mean of its divisors is an integer number (14413152600).

Almost surely, 2^221201220103 is an apocalyptic number.

221201220103 is a deficient number, since it is larger than the sum of its proper divisors (9409221497).

221201220103 is a wasteful number, since it uses less digits than its factorization.

221201220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416238.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221201220103 its reverse (301022102122), we get a palindrome (522223322225).

The spelling of 221201220103 in words is "two hundred twenty-one billion, two hundred one million, two hundred twenty thousand, one hundred three".