221113043 has 2 divisors, whose sum is σ = 221113044. Its totient is φ = 221113042.

The previous prime is 221113037. The next prime is 221113091. The reversal of 221113043 is 340311122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221113043 - 2¹⁰ = 221112019 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221112043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556521 + 110556522.

It is an arithmetic number, because the mean of its divisors is an integer number (110556522).

Almost surely, 2^221113043 is an apocalyptic number.

221113043 is a deficient number, since it is larger than the sum of its proper divisors (1).

221113043 is an equidigital number, since it uses as much as digits as its factorization.

221113043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 221113043 is about 14869.8703087821. The cubic root of 221113043 is about 604.6974267362.

Adding to 221113043 its reverse (340311122), we get a palindrome (561424165).

The spelling of 221113043 in words is "two hundred twenty-one million, one hundred thirteen thousand, forty-three".