122366780197 has 2 divisors, whose sum is σ = 122366780198. Its totient is φ = 122366780196.

The previous prime is 122366780189. The next prime is 122366780201. The reversal of 122366780197 is 791087663221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99713219076 + 22653561121 = 315774^2 + 150511^2 .

It is a cyclic number.

It is not a de Polignac number, because 122366780197 - 2³ = 122366780189 is a prime.

It is a super-2 number, since 2×122366780197² (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 (122366780117) 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, 61183390098 + 61183390099.

It is an arithmetic number, because the mean of its divisors is an integer number (61183390099).

Almost surely, 2^122366780197 is an apocalyptic number.

It is an amenable number.

122366780197 is a deficient number, since it is larger than the sum of its proper divisors (1).

122366780197 is an equidigital number, since it uses as much as digits as its factorization.

122366780197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 122366780197 in words is "one hundred twenty-two billion, three hundred sixty-six million, seven hundred eighty thousand, one hundred ninety-seven".