122789581193 has 2 divisors, whose sum is σ = 122789581194. Its totient is φ = 122789581192.

The previous prime is 122789581141. The next prime is 122789581249. The reversal of 122789581193 is 391185987221.

It is an a-pointer prime, because the next prime (122789581249) can be obtained adding 122789581193 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99015950224 + 23773630969 = 314668^2 + 154187^2 .

It is a cyclic number.

It is not a de Polignac number, because 122789581193 - 2¹⁸ = 122789319049 is a prime.

It is not a weakly prime, because it can be changed into another prime (122789571193) 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, 61394790596 + 61394790597.

It is an arithmetic number, because the mean of its divisors is an integer number (61394790597).

Almost surely, 2^122789581193 is an apocalyptic number.

It is an amenable number.

122789581193 is a deficient number, since it is larger than the sum of its proper divisors (1).

122789581193 is an equidigital number, since it uses as much as digits as its factorization.

122789581193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 56.

The spelling of 122789581193 in words is "one hundred twenty-two billion, seven hundred eighty-nine million, five hundred eighty-one thousand, one hundred ninety-three".