122556661319 has 2 divisors, whose sum is σ = 122556661320. Its totient is φ = 122556661318.

The previous prime is 122556661309. The next prime is 122556661373. The reversal of 122556661319 is 913166655221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122556661319 - 2⁴ = 122556661303 is a prime.

It is a super-2 number, since 2×122556661319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122556661309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61278330659 + 61278330660.

It is an arithmetic number, because the mean of its divisors is an integer number (61278330660).

Almost surely, 2^122556661319 is an apocalyptic number.

122556661319 is a deficient number, since it is larger than the sum of its proper divisors (1).

122556661319 is an equidigital number, since it uses as much as digits as its factorization.

122556661319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The spelling of 122556661319 in words is "one hundred twenty-two billion, five hundred fifty-six million, six hundred sixty-one thousand, three hundred nineteen".