221034113 has 2 divisors, whose sum is σ = 221034114. Its totient is φ = 221034112.

The previous prime is 221034103. The next prime is 221034133. The reversal of 221034113 is 311430122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158180929 + 62853184 = 12577^2 + 7928^2 .

It is a cyclic number.

It is not a de Polignac number, because 221034113 - 2⁴ = 221034097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221034091 and 221034100.

It is not a weakly prime, because it can be changed into another prime (221034103) 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 as a sum of consecutive naturals, namely, 110517056 + 110517057.

It is an arithmetic number, because the mean of its divisors is an integer number (110517057).

Almost surely, 2^221034113 is an apocalyptic number.

It is an amenable number.

221034113 is a deficient number, since it is larger than the sum of its proper divisors (1).

221034113 is an equidigital number, since it uses as much as digits as its factorization.

221034113 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 221034113 is about 14867.2160473977. The cubic root of 221034113 is about 604.6254658853.

Adding to 221034113 its reverse (311430122), we get a palindrome (532464235).

The spelling of 221034113 in words is "two hundred twenty-one million, thirty-four thousand, one hundred thirteen".