1223966057959 has 2 divisors, whose sum is σ = 1223966057960. Its totient is φ = 1223966057958.

The previous prime is 1223966057917. The next prime is 1223966058011. The reversal of 1223966057959 is 9597506693221.

It is a weak prime.

It is an emirp because it is prime and its reverse (9597506693221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223966057959 - 2¹¹ = 1223966055911 is a prime.

It is a super-2 number, since 2×1223966057959² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223966057959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223966057459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611983028979 + 611983028980.

It is an arithmetic number, because the mean of its divisors is an integer number (611983028980).

Almost surely, 2^{1223966057959} is an apocalyptic number.

1223966057959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223966057959 is an equidigital number, since it uses as much as digits as its factorization.

1223966057959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55112400, while the sum is 64.

The spelling of 1223966057959 in words is "one trillion, two hundred twenty-three billion, nine hundred sixty-six million, fifty-seven thousand, nine hundred fifty-nine".