122138179 has 2 divisors, whose sum is σ = 122138180. Its totient is φ = 122138178.

The previous prime is 122138167. The next prime is 122138249. The reversal of 122138179 is 971831221.

It is a weak prime.

It is an emirp because it is prime and its reverse (971831221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122138179 - 2⁹ = 122137667 is a prime.

It is not a weakly prime, because it can be changed into another prime (122138279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61069089 + 61069090.

It is an arithmetic number, because the mean of its divisors is an integer number (61069090).

Almost surely, 2^122138179 is an apocalyptic number.

122138179 is a deficient number, since it is larger than the sum of its proper divisors (1).

122138179 is an equidigital number, since it uses as much as digits as its factorization.

122138179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 122138179 is about 11051.6143164698. The cubic root of 122138179 is about 496.1547424636.

The spelling of 122138179 in words is "one hundred twenty-two million, one hundred thirty-eight thousand, one hundred seventy-nine".