221120201 has 4 divisors (see below), whose sum is σ = 221456400. Its totient is φ = 220784004.

The previous prime is 221120197. The next prime is 221120219. The reversal of 221120201 is 102021122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221120201 - 2² = 221120197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167111 + ... + 168428.

It is an arithmetic number, because the mean of its divisors is an integer number (55364100).

Almost surely, 2^221120201 is an apocalyptic number.

It is an amenable number.

221120201 is a deficient number, since it is larger than the sum of its proper divisors (336199).

221120201 is an equidigital number, since it uses as much as digits as its factorization.

221120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336198.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 221120201 is about 14870.1109948783. The cubic root of 221120201 is about 604.7039518714.

Adding to 221120201 its reverse (102021122), we get a palindrome (323141323).

The spelling of 221120201 in words is "two hundred twenty-one million, one hundred twenty thousand, two hundred one".