222066457 has 2 divisors, whose sum is σ = 222066458. Its totient is φ = 222066456.

The previous prime is 222066443. The next prime is 222066497. The reversal of 222066457 is 754660222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144696841 + 77369616 = 12029^2 + 8796^2 .

It is a cyclic number.

It is not a de Polignac number, because 222066457 - 2¹⁵ = 222033689 is a prime.

It is a super-2 number, since 2×222066457² = 98627022649065698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222066497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111033228 + 111033229.

It is an arithmetic number, because the mean of its divisors is an integer number (111033229).

Almost surely, 2^222066457 is an apocalyptic number.

It is an amenable number.

222066457 is a deficient number, since it is larger than the sum of its proper divisors (1).

222066457 is an equidigital number, since it uses as much as digits as its factorization.

222066457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 222066457 is about 14901.8944097722. The cubic root of 222066457 is about 605.5653091017.

The spelling of 222066457 in words is "two hundred twenty-two million, sixty-six thousand, four hundred fifty-seven".