122139120979 has 2 divisors, whose sum is σ = 122139120980. Its totient is φ = 122139120978.

The previous prime is 122139120919. The next prime is 122139120997. The reversal of 122139120979 is 979021931221.

Together with next prime (122139120997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (979021931221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122139120979 - 2²⁵ = 122105566547 is a prime.

It is not a weakly prime, because it can be changed into another prime (122139120919) 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, 61069560489 + 61069560490.

It is an arithmetic number, because the mean of its divisors is an integer number (61069560490).

Almost surely, 2^122139120979 is an apocalyptic number.

122139120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

122139120979 is an equidigital number, since it uses as much as digits as its factorization.

122139120979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 122139120979 in words is "one hundred twenty-two billion, one hundred thirty-nine million, one hundred twenty thousand, nine hundred seventy-nine".