122017665777 has 32 divisors (see below), whose sum is σ = 190253276928. Its totient is φ = 68115081216.

The previous prime is 122017665751. The next prime is 122017665779. The reversal of 122017665777 is 777566710221.

It is not a de Polignac number, because 122017665777 - 2¹² = 122017661681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122017665779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24073 + ... + 494585.

It is an arithmetic number, because the mean of its divisors is an integer number (5945414904).

Almost surely, 2^122017665777 is an apocalyptic number.

It is an amenable number.

122017665777 is a deficient number, since it is larger than the sum of its proper divisors (68235611151).

122017665777 is a wasteful number, since it uses less digits than its factorization.

122017665777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470809.

The product of its (nonzero) digits is 1728720, while the sum is 51.

The spelling of 122017665777 in words is "one hundred twenty-two billion, seventeen million, six hundred sixty-five thousand, seven hundred seventy-seven".