122144447777197 has 2 divisors, whose sum is σ = 122144447777198. Its totient is φ = 122144447777196.

The previous prime is 122144447777179. The next prime is 122144447777293. The reversal of 122144447777197 is 791777744441221.

Together with previous prime (122144447777179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70899953284521 + 51244494492676 = 8420211^2 + 7158526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122144447777197 is a prime.

It is a super-2 number, since 2×122144447777197² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122144447777147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61072223888598 + 61072223888599.

It is an arithmetic number, because the mean of its divisors is an integer number (61072223888599).

Almost surely, 2^{122144447777197} is an apocalyptic number.

It is an amenable number.

122144447777197 is a deficient number, since it is larger than the sum of its proper divisors (1).

122144447777197 is an equidigital number, since it uses as much as digits as its factorization.

122144447777197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 154893312, while the sum is 67.

The spelling of 122144447777197 in words is "one hundred twenty-two trillion, one hundred forty-four billion, four hundred forty-seven million, seven hundred seventy-seven thousand, one hundred ninety-seven".