122345622779 has 4 divisors (see below), whose sum is σ = 124948721184. Its totient is φ = 119742524376.

The previous prime is 122345622709. The next prime is 122345622793. The reversal of 122345622779 is 977226543221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977226543221 = 19 ⋅51432975959.

It is a cyclic number.

It is not a de Polignac number, because 122345622779 - 2²⁴ = 122328845563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122345622709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301549132 + ... + 1301549225.

It is an arithmetic number, because the mean of its divisors is an integer number (31237180296).

Almost surely, 2^122345622779 is an apocalyptic number.

122345622779 is a deficient number, since it is larger than the sum of its proper divisors (2603098405).

122345622779 is an equidigital number, since it uses as much as digits as its factorization.

122345622779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603098404.

The product of its digits is 2540160, while the sum is 50.

The spelling of 122345622779 in words is "one hundred twenty-two billion, three hundred forty-five million, six hundred twenty-two thousand, seven hundred seventy-nine".