122319979 has 2 divisors, whose sum is σ = 122319980. Its totient is φ = 122319978.

The previous prime is 122319973. The next prime is 122320027. The reversal of 122319979 is 979913221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122319979 - 2¹⁹ = 121795691 is a prime.

It is not a weakly prime, because it can be changed into another prime (122319973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61159989 + 61159990.

It is an arithmetic number, because the mean of its divisors is an integer number (61159990).

Almost surely, 2^122319979 is an apocalyptic number.

122319979 is a deficient number, since it is larger than the sum of its proper divisors (1).

122319979 is an equidigital number, since it uses as much as digits as its factorization.

122319979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 43.

The square root of 122319979 is about 11059.8363007777. The cubic root of 122319979 is about 496.4007922406.

The spelling of 122319979 in words is "one hundred twenty-two million, three hundred nineteen thousand, nine hundred seventy-nine".