1222222120709 has 2 divisors, whose sum is σ = 1222222120710. Its totient is φ = 1222222120708.

The previous prime is 1222222120687. The next prime is 1222222120877. The reversal of 1222222120709 is 9070212222221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997501562500 + 224720558209 = 998750^2 + 474047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222222120709 - 2²⁴ = 1222205343493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222222120409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611111060354 + 611111060355.

It is an arithmetic number, because the mean of its divisors is an integer number (611111060355).

Almost surely, 2^{1222222120709} is an apocalyptic number.

It is an amenable number.

1222222120709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222222120709 is an equidigital number, since it uses as much as digits as its factorization.

1222222120709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 1222222120709 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, seven hundred nine".