1222086657689 has 2 divisors, whose sum is σ = 1222086657690. Its totient is φ = 1222086657688.

The previous prime is 1222086657587. The next prime is 1222086657703. The reversal of 1222086657689 is 9867566802221.

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., 886249022464 + 335837635225 = 941408^2 + 579515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222086657689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222086651689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611043328844 + 611043328845.

It is an arithmetic number, because the mean of its divisors is an integer number (611043328845).

Almost surely, 2^{1222086657689} is an apocalyptic number.

It is an amenable number.

1222086657689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222086657689 is an equidigital number, since it uses as much as digits as its factorization.

1222086657689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 1222086657689 in words is "one trillion, two hundred twenty-two billion, eighty-six million, six hundred fifty-seven thousand, six hundred eighty-nine".