1223210122709 has 2 divisors, whose sum is σ = 1223210122710. Its totient is φ = 1223210122708.

The previous prime is 1223210122697. The next prime is 1223210122769. The reversal of 1223210122709 is 9072210123221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 993430824100 + 229779298609 = 996710^2 + 479353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223210122709 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 (1223210122769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611605061354 + 611605061355.

It is an arithmetic number, because the mean of its divisors is an integer number (611605061355).

Almost surely, 2^{1223210122709} is an apocalyptic number.

It is an amenable number.

1223210122709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223210122709 is an equidigital number, since it uses as much as digits as its factorization.

1223210122709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 1223210122709 in words is "one trillion, two hundred twenty-three billion, two hundred ten million, one hundred twenty-two thousand, seven hundred nine".