221140201 has 4 divisors (see below), whose sum is σ = 224888400. Its totient is φ = 217392004.

The previous prime is 221140187. The next prime is 221140223. The reversal of 221140201 is 102041122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 102041122 = 2 ⋅51020561.

It is a cyclic number.

It is not a de Polignac number, because 221140201 - 2²¹ = 219043049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221140291) 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, 1874011 + ... + 1874128.

It is an arithmetic number, because the mean of its divisors is an integer number (56222100).

Almost surely, 2^221140201 is an apocalyptic number.

It is an amenable number.

221140201 is a deficient number, since it is larger than the sum of its proper divisors (3748199).

221140201 is an equidigital number, since it uses as much as digits as its factorization.

221140201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748198.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 221140201 is about 14870.7834696091. The cubic root of 221140201 is about 604.7221828522.

Adding to 221140201 its reverse (102041122), we get a palindrome (323181323).

The spelling of 221140201 in words is "two hundred twenty-one million, one hundred forty thousand, two hundred one".