221140223 has 2 divisors, whose sum is σ = 221140224. Its totient is φ = 221140222.

The previous prime is 221140187. The next prime is 221140237. The reversal of 221140223 is 322041122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221140223 - 2⁶ = 221140159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221140273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110570111 + 110570112.

It is an arithmetic number, because the mean of its divisors is an integer number (110570112).

Almost surely, 2^221140223 is an apocalyptic number.

221140223 is a deficient number, since it is larger than the sum of its proper divisors (1).

221140223 is an equidigital number, since it uses as much as digits as its factorization.

221140223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221140223 is about 14870.7842093146. The cubic root of 221140223 is about 604.7222029057.

Adding to 221140223 its reverse (322041122), we get a palindrome (543181345).

The spelling of 221140223 in words is "two hundred twenty-one million, one hundred forty thousand, two hundred twenty-three".