122366780189 has 2 divisors, whose sum is σ = 122366780190. Its totient is φ = 122366780188.

The previous prime is 122366780171. The next prime is 122366780197. The reversal of 122366780189 is 981087663221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111477857689 + 10888922500 = 333883^2 + 104350^2 .

It is a cyclic number.

It is not a de Polignac number, because 122366780189 - 2⁸ = 122366779933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122366780189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122366780119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61183390094 + 61183390095.

It is an arithmetic number, because the mean of its divisors is an integer number (61183390095).

Almost surely, 2^122366780189 is an apocalyptic number.

It is an amenable number.

122366780189 is a deficient number, since it is larger than the sum of its proper divisors (1).

122366780189 is an equidigital number, since it uses as much as digits as its factorization.

122366780189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 122366780189 in words is "one hundred twenty-two billion, three hundred sixty-six million, seven hundred eighty thousand, one hundred eighty-nine".