222006457 has 2 divisors, whose sum is σ = 222006458. Its totient is φ = 222006456.

The previous prime is 222006413. The next prime is 222006479. The reversal of 222006457 is 754600222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133194681 + 88811776 = 11541^2 + 9424^2 .

It is a cyclic number.

It is not a de Polignac number, because 222006457 - 2⁷ = 222006329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222006497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111003228 + 111003229.

It is an arithmetic number, because the mean of its divisors is an integer number (111003229).

Almost surely, 2^222006457 is an apocalyptic number.

It is an amenable number.

222006457 is a deficient number, since it is larger than the sum of its proper divisors (1).

222006457 is an equidigital number, since it uses as much as digits as its factorization.

222006457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 222006457 is about 14899.8811069082. The cubic root of 222006457 is about 605.5107650823.

Adding to 222006457 its reverse (754600222), we get a palindrome (976606679).

The spelling of 222006457 in words is "two hundred twenty-two million, six thousand, four hundred fifty-seven".