222220613 has 2 divisors, whose sum is σ = 222220614. Its totient is φ = 222220612.

The previous prime is 222220553. The next prime is 222220643. The reversal of 222220613 is 316022222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171269569 + 50951044 = 13087^2 + 7138^2 .

It is a cyclic number.

It is not a de Polignac number, because 222220613 - 2⁸ = 222220357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222220643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110306 + 111110307.

It is an arithmetic number, because the mean of its divisors is an integer number (111110307).

Almost surely, 2^222220613 is an apocalyptic number.

It is an amenable number.

222220613 is a deficient number, since it is larger than the sum of its proper divisors (1).

222220613 is an equidigital number, since it uses as much as digits as its factorization.

222220613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 222220613 is about 14907.0658749467. The cubic root of 222220613 is about 605.7054021984.

Adding to 222220613 its reverse (316022222), we get a palindrome (538242835).

The spelling of 222220613 in words is "two hundred twenty-two million, two hundred twenty thousand, six hundred thirteen".