122663336291 has 2 divisors, whose sum is σ = 122663336292. Its totient is φ = 122663336290.

The previous prime is 122663336287. The next prime is 122663336297. The reversal of 122663336291 is 192633366221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122663336291 - 2² = 122663336287 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (122663336297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61331668145 + 61331668146.

It is an arithmetic number, because the mean of its divisors is an integer number (61331668146).

Almost surely, 2^122663336291 is an apocalyptic number.

122663336291 is a deficient number, since it is larger than the sum of its proper divisors (1).

122663336291 is an equidigital number, since it uses as much as digits as its factorization.

122663336291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 44.

The spelling of 122663336291 in words is "one hundred twenty-two billion, six hundred sixty-three million, three hundred thirty-six thousand, two hundred ninety-one".