221110201 has 16 divisors (see below), whose sum is σ = 261555840. Its totient is φ = 184947840.

The previous prime is 221110157. The next prime is 221110213. The reversal of 221110201 is 102011122.

It is a cyclic number.

It is not a de Polignac number, because 221110201 - 2¹⁵ = 221077433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221110271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13780 + ... + 25141.

It is an arithmetic number, because the mean of its divisors is an integer number (16347240).

Almost surely, 2^221110201 is an apocalyptic number.

It is an amenable number.

221110201 is a deficient number, since it is larger than the sum of its proper divisors (40445639).

221110201 is a wasteful number, since it uses less digits than its factorization.

221110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38976.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 221110201 is about 14869.7747461083. The cubic root of 221110201 is about 604.6948359688.

Adding to 221110201 its reverse (102011122), we get a palindrome (323121323).

The spelling of 221110201 in words is "two hundred twenty-one million, one hundred ten thousand, two hundred one".