222066497 has 2 divisors, whose sum is σ = 222066498. Its totient is φ = 222066496.

The previous prime is 222066457. The next prime is 222066499. The reversal of 222066497 is 794660222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118352641 + 103713856 = 10879^2 + 10184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222066497 is a prime.

Together with 222066499, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222066497.

It is not a weakly prime, because it can be changed into another prime (222066499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111033248 + 111033249.

It is an arithmetic number, because the mean of its divisors is an integer number (111033249).

Almost surely, 2^222066497 is an apocalyptic number.

It is an amenable number.

222066497 is a deficient number, since it is larger than the sum of its proper divisors (1).

222066497 is an equidigital number, since it uses as much as digits as its factorization.

222066497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 222066497 is about 14901.8957518834. The cubic root of 222066497 is about 605.5653454611.

The spelling of 222066497 in words is "two hundred twenty-two million, sixty-six thousand, four hundred ninety-seven".